WO2019190091A1 - Dispositif de charge sans fil pourvu d'une bobine de communication sans fil - Google Patents

Dispositif de charge sans fil pourvu d'une bobine de communication sans fil Download PDF

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Publication number
WO2019190091A1
WO2019190091A1 PCT/KR2019/003050 KR2019003050W WO2019190091A1 WO 2019190091 A1 WO2019190091 A1 WO 2019190091A1 KR 2019003050 W KR2019003050 W KR 2019003050W WO 2019190091 A1 WO2019190091 A1 WO 2019190091A1
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WO
WIPO (PCT)
Prior art keywords
wireless charging
coil
charging coil
wireless
disposed
Prior art date
Application number
PCT/KR2019/003050
Other languages
English (en)
Korean (ko)
Inventor
임성현
Original Assignee
엘지이노텍 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020180035905A external-priority patent/KR20190113347A/ko
Priority claimed from KR1020180036242A external-priority patent/KR20190114090A/ko
Priority claimed from KR1020180041467A external-priority patent/KR20190118297A/ko
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Publication of WO2019190091A1 publication Critical patent/WO2019190091A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters

Definitions

  • This embodiment relates to a wireless charging device having a wireless communication coil.
  • Portable terminals such as mobile phones and laptops include a battery that stores power and circuits for charging and discharging the battery. In order for the battery of the terminal to be charged, power must be supplied from an external charger.
  • the terminal is supplied with commercial power and converted into a voltage and a current corresponding to the battery to supply electrical energy to the battery through the terminal of the battery.
  • Supply method This terminal supply method is accompanied by the use of a physical cable (cable) or wire. Therefore, when handling a lot of terminal supply equipment, many cables occupy considerable working space, are difficult to organize, and are not good in appearance.
  • the terminal supply method may cause problems such as instantaneous discharge phenomenon due to different potential difference between the terminals, burnout and fire caused by foreign substances, natural discharge, deterioration of battery life and performance.
  • a charging system (hereinafter referred to as a "wireless charging system") and a control method using a method of transmitting power wirelessly have been proposed.
  • the wireless charging system was not pre-installed in some portable terminals in the past and the consumer had to separately purchase a wireless charging receiver accessory, the demand for the wireless charging system was low, but the number of wireless charging users is expected to increase rapidly. It is expected to be equipped with wireless charging function.
  • the wireless charging system includes a wireless power transmitter for supplying electrical energy through a wireless power transmission method and a wireless power receiver for charging the battery by receiving the electrical energy supplied from the wireless power transmitter.
  • NFC Near Field Communication
  • the design technology of the wireless charging device has been developed in such a manner that simultaneously providing the above-described NFC function to the wireless communication coil with a wireless charging coil having a wireless charging function.
  • the present embodiment is devised to solve the problems of the prior art, and an object of the present embodiment is to provide a wireless charging device having a wireless communication coil.
  • the present embodiment is to provide a wireless charging device having a wireless communication coil capable of wireless communication and wireless charging.
  • the present embodiment is to provide a wireless charging device having a miniaturized wireless communication coil.
  • This embodiment is to improve the wireless charging device having a simple wireless communication coil structure.
  • This embodiment is to provide a wireless charging device having a wireless communication coil with a simplified manufacturing process.
  • the present embodiment is to provide a wireless charging device having a wireless communication coil to reduce the manufacturing cost.
  • the present embodiment provides a wireless charging device having a wireless communication coil having a high recognition rate while having fairness and reliability.
  • the present embodiment provides a wireless charging device having a wireless communication coil having improved permeability and a compromised permeability according to a wireless communication coil and a wireless charging coil.
  • This embodiment is to provide a wireless charging device having a wireless communication coil with improved heat dissipation.
  • Wireless charging device comprises a heat dissipation sheet; A shielding material disposed on the heat dissipation sheet; A wireless charging coil module disposed on the shield; And a wireless communication coil wound by being stacked vertically on a side surface to surround the shielding material.
  • Wireless charging device comprises a heat dissipation sheet; A shielding material disposed on the heat dissipation sheet; A wireless charging module module disposed on the shield; And a wireless communication coil disposed on the shielding material, the wireless communication coil being wound a plurality of times in a horizontal direction to surround the wireless charging coil module.
  • Wireless charging device includes a substrate; A shield disposed on the substrate; A wireless charging coil module disposed on the shield; And a wireless communication coil disposed on the shield and wound a plurality of times in a horizontal direction to surround the wireless charging coil module, wherein the shield has a magnetic permeability of 720 ⁇ to 880 ⁇ .
  • the wireless charging device with a wireless communication coil according to the present embodiment can simplify the manufacturing process according to the configuration of the wireless communication coil.
  • the efficiency for wireless communication and wireless charging can be maximized.
  • the wireless communication coil By configuring the wireless communication coil in a helical form, it is possible to maximize the efficiency for wireless communication and wireless charging.
  • Wireless charging device having a wireless communication coil according to the present embodiment can improve the heating effect and shielding effect.
  • the wireless charging device having a wireless communication coil according to the present embodiment can maintain the recognition rate while reducing the manufacturing cost.
  • the wireless charging device having a wireless communication coil according to the present embodiment may have an effect of having an excellent inductance value while reducing the resistance value of the coil.
  • the wireless charging device including the wireless communication coil according to the present embodiment implements the wireless charging coil and the wireless communication coil on the shielding material, thereby reducing the manufacturing cost, realizing the simplification of the manufacturing process, and the small and thin wireless charging device. It can have an effect that can be implemented.
  • the wireless charging device having the wireless communication coil according to the present embodiment may have the effect of maintaining the reliability of the wireless charging coil and the wireless communication coil and miniaturizing the wireless charging device according to the compromise and improvement of the magnetic permeability according to a single shielding material. .
  • FIG. 1 is a block diagram illustrating a wireless charging system according to an embodiment.
  • FIG. 2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment.
  • FIG 3 is an exploded perspective view of a wireless charging device according to an embodiment.
  • FIG. 4 is a perspective view of a wireless charging device according to an embodiment.
  • FIG. 5 is a rear perspective view of the wireless charging device according to an embodiment.
  • FIG. 6 is a side view illustrating a cross section taken along line AA ′ of the wireless charging device illustrated in FIG. 3.
  • FIG. 7 is a side view illustrating a cross section taken along line B-B 'of the wireless charging device shown in FIG.
  • FIG. 8 is an exploded perspective view of a wireless charging device according to another embodiment.
  • FIG. 9 is a perspective view of a wireless charging device according to another embodiment.
  • FIG. 10 is a side view illustrating a cross section taken along line AA ′ of the wireless charging device illustrated in FIG. 9.
  • FIG. 11 is a side view illustrating a cross section taken along line B-B 'of the wireless charging device shown in FIG. 9.
  • FIG. 12 is a side view illustrating a cross section taken along line CC ′ of the wireless charging device illustrated in FIG. 9.
  • FIG. 13 is an exploded perspective view of a wireless charging device according to another embodiment.
  • FIG. 14 is a perspective view of a wireless charging device according to another embodiment.
  • FIG. 15 is a side view illustrating a cross section taken along line AA ′ of the wireless charging device of FIG. 14.
  • FIG. 16 is a side view illustrating a cross section taken along line B-B 'of the wireless charging device shown in FIG.
  • FIG. 17 is an exploded perspective view of a wireless charging device according to another embodiment.
  • FIG. 18 is a perspective view of a wireless charging device according to another embodiment.
  • FIG. 19 is a rear perspective view of the wireless charging device according to the embodiment.
  • FIG. 20 is a side view illustrating a cross section taken along line AA ′ of the wireless charging device illustrated in FIG. 17.
  • FIG. 21 is a side view illustrating a cross section taken along line B-B 'of the wireless charging device shown in FIG.
  • FIG. 22 is a side view illustrating a cross section taken along line CC ′ of the wireless charging device illustrated in FIG. 7.
  • FIG. 23 is an exploded perspective view of a wireless charging device according to another embodiment.
  • FIG. 24 is a perspective view of a wireless charging device according to another embodiment.
  • FIG. 25 is a side view illustrating a cross section taken along line AA ′ of the wireless charging device illustrated in FIG. 24.
  • FIG. 26 is a side view illustrating a cross section taken along line B-B 'of the wireless charging device shown in FIG. 24.
  • FIG. 27 is a side view illustrating a cross section taken along line CC ′ of the wireless charging device illustrated in FIG. 24.
  • FIG. 28 is an exploded perspective view of a wireless charging device according to another embodiment.
  • 29 is a perspective view of a wireless charging device according to another embodiment.
  • FIG. 30 is a side view illustrating a cross section taken along line AA ′ of the wireless charging device illustrated in FIG. 29.
  • FIG. 31 is a side view illustrating a cross section taken along line B-B 'of the wireless charging device shown in FIG. 29.
  • FIG. 32 is a side view illustrating a cross section taken along line CC ′ of the wireless charging device illustrated in FIG. 29.
  • FIG 33 is an exploded perspective view of a wireless charging device according to another embodiment.
  • FIG. 34 is a perspective view of the wireless charging device shown in FIG.
  • FIG. 35 is a side view illustrating A-A 'of the wireless charging device shown in FIG. 34.
  • FIG. 36 is a cross-sectional view taken along line B-B 'of the wireless charging device shown in FIG.
  • FIG. 37 is a side view illustrating C-C ′ of the wireless charging device shown in FIG. 34.
  • FIG. 38 is an exploded perspective view of a wireless charging device according to another embodiment.
  • FIG. 39 is a perspective view of the wireless charging device shown in FIG.
  • FIG. 40 is a side view illustrating A-A 'of the wireless charging device shown in FIG. 39.
  • FIG. 41 is a cross-sectional view taken along line BB ′ of the wireless charging device shown in FIG. 39.
  • FIG. 42 is a side view illustrating C-C ′ of the wireless charging device shown in FIG. 38.
  • FIG. 43 is an exploded perspective view of a wireless charging device according to another embodiment.
  • FIG. 44 is a perspective view of the wireless charging device shown in FIG.
  • FIG. 45 is a side view illustrating A-A 'of the wireless charging device shown in FIG. 44.
  • FIG. 46 is a side view illustrating BB ′ of the wireless charging device shown in FIG. 44.
  • FIG. 48 is a perspective view of the wireless charging device shown in FIG.
  • FIG. 49 is a side view illustrating A-A 'of the wireless charging device shown in FIG. 48.
  • FIG. 50 is a cross-sectional view taken along line B-B 'of the wireless charging device shown in FIG.
  • FIG. 51 is a side view illustrating C-C ′ of the wireless charging device shown in FIG. 48.
  • the device for transmitting wireless power on the wireless power charging system is a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a transmitter, a transmitter, a transmitter, a transmitter side for convenience of description.
  • a wireless power transmitter, a wireless power transmitter, and a wireless charging device will be used in combination.
  • a wireless power receiver, a wireless power receiver, a wireless power receiver, a wireless power receiver, a wireless power receiver, a receiver, a receiver, a receiver, a receiver, a receiver Terminals and the like may be used interchangeably.
  • Wireless charging apparatus may be configured in the form of a pad, a cradle, an access point (AP), a small base station, a stand, a ceiling buried, a wall, etc., one transmitter receives a plurality of wireless power It may also transmit power to the device.
  • AP access point
  • AP small base station
  • stand a stand
  • ceiling buried
  • wall etc.
  • the wireless power transmitter may not only be used on a desk or a table, but also may be developed and applied to an automobile and used in a vehicle.
  • the wireless power transmitter installed in the vehicle may be provided in the form of a cradle that can be fixed and mounted simply and stably.
  • Terminal is a mobile phone (smart phone), smart phone (smart phone), laptop computer (laptop computer), digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), navigation, MP3 player, electric It may be used in small electronic devices such as a toothbrush, an electronic tag, a lighting device, a remote control, a fishing bobber, and the like, but is not limited to this.
  • the term “terminal” or “device” may be used interchangeably.
  • the wireless power receiver according to another embodiment may be mounted in a vehicle, an unmanned aerial vehicle, an air drone, or the like.
  • the wireless power transmitter and the wireless power receiver constituting the wireless power system may exchange control signals or information through in-band communication or Bluetooth low energy (BLE) communication.
  • in-band communication and BLE communication may be performed by a pulse width modulation method, a frequency modulation method, a phase modulation method, an amplitude modulation method, an amplitude and phase modulation method, or the like.
  • the wireless power receiver may transmit various control signals and information to the wireless power transmitter by generating a feedback signal by switching ON / OFF the current induced through the receiving coil in a predetermined pattern.
  • the information transmitted by the wireless power receiver may include various state information including received power strength information.
  • the wireless power transmitter may calculate the charging efficiency or the power transmission efficiency based on the received power strength information.
  • FIG. 1 is a block diagram illustrating a wireless charging system according to an embodiment.
  • a wireless charging system includes a wireless power transmitter 10 that largely transmits power wirelessly, a wireless power receiver 20 that receives the transmitted power, and an electronic device 30 that receives the received contribution. Can be configured.
  • the wireless power transmitter 10 and the wireless power receiver 20 may perform in-band communication for exchanging information using the same frequency band as the operating frequency used for wireless power transmission.
  • the wireless power transmitter 10 and the wireless power receiver 20 may perform out-of-band communication in which information is exchanged using a separate frequency band different from an operating frequency used for wireless power transmission. have.
  • the information exchanged between the wireless power transmitter 10 and the wireless power receiver 20 may include control information as well as status information of each other.
  • the status information and control information exchanged between the transmitting and receiving end will be more clear through the description of the embodiments to be described later.
  • the in-band communication and the out-of-band communication may provide bidirectional communication, but are not limited thereto. In another embodiment, the in-band communication and the out-of-band communication may provide one-way communication or half-duplex communication.
  • the unidirectional communication may be the wireless power receiver 20 transmitting information only to the wireless power transmitter 20, but is not limited thereto.
  • the wireless power transmitter 10 may transmit the information to the wireless power receiver 20. It may be to transmit.
  • bidirectional communication between the wireless power receiver 20 and the wireless power transmitter 10 is possible, but at one time, only one device can transmit information.
  • the wireless power receiver 20 may obtain various state information of the electronic device 30.
  • the state information of the electronic device 30 may include current power usage information, information for identifying a running application, CPU usage information, battery charge status information, battery output voltage / current information, and the like. If not, information that can be obtained from the electronic device 30 and can be utilized for wireless power control is sufficient.
  • FIG. 2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment.
  • the wireless power transmitter 200 includes a power converter 210, a power transmitter 220, a wireless charging communication unit 230, a controller 240, a current sensor 250, and a temperature sensor 260.
  • the storage unit 270 may include a fan 280, a timer 290, a short range communication unit 201, and a wireless communication coil 202.
  • the configuration of the wireless power transmitter 200 is not necessarily required, and may include more or fewer components.
  • the power supply unit 100 may provide supply power.
  • the power supply unit 100 may correspond to a battery built in the wireless power transmitter 200 or may be an external power source.
  • the embodiment is not limited to the shape of the power supply unit 100.
  • the power converter 210 may perform a function of converting the power into power of a predetermined intensity.
  • the power converter 210 may include a DC / DC converter 211 and an amplifier 212.
  • the DC / DC converter 211 may perform a function of converting DC power supplied from the power supply unit 100 into DC power having a specific intensity according to a control signal of the controller 240.
  • the amplifier 212 may adjust the intensity of the DC / DC converted power according to the control signal of the controller 240.
  • the controller 240 may receive the power reception state information or the power control signal of the wireless power receiver through the wireless charging communication unit 230, and the amplifier 212 based on the received power reception state information or the power control signal.
  • the amplification factor of can be adjusted dynamically.
  • the power reception state information may include, but is not limited to, strength information of the rectifier output voltage and strength information of a current applied to the receiving coil.
  • the power control signal may include a signal for requesting power increase, a signal for requesting power reduction, and the like.
  • the current sensor 250 may measure an input current input to the driver 210.
  • the current sensor 250 may provide the measured input current value to the controller 240.
  • the control unit 240 may adaptively block the power supply from the power supply unit 100 or block the power supply to the amplifier 212 based on the input current value measured by the current sensor 250.
  • the temperature sensor 260 may measure the internal temperature of the wireless power transmitter 200 and provide the measurement result to the controller 240.
  • the temperature sensor 260 may include one or more temperature sensors.
  • One or more temperature sensors may be disposed in correspondence with the transmission coil 2230 of the power transmitter 220 to measure the temperature of the transmission coil 223.
  • the controller 240 may adaptively block power supply from the power supply unit 100 or block power from being supplied to the amplifier 212 based on the temperature value measured by the temperature sensor 260.
  • the power converter 210 and one side may further include a predetermined power cut-off circuit for cutting off the power supplied from the power supply unit 100 or cutting off the power supplied to the amplifier 212.
  • the controller 240 may adjust the intensity of power provided to the power transmitter 220 based on the temperature value measured by the temperature sensor 260. Accordingly, the wireless power transmitter according to the embodiment can prevent the internal circuit from being damaged due to overheating.
  • the power transmitter 220 transmits the power signal output from the power converter 210 to the wireless power receiver.
  • the power transmitter 220 may include a driver 221, a selector 222, and one or more transmission coils 223.
  • the driver 221 may generate an AC power signal in which an interference component having a specific frequency is inserted into the DC power signal output from the power converter 210 and transmit the generated AC power signal to the transmission coil 223.
  • the frequencies of the AC power signals transmitted to the plurality of transmission coils included in the transmission coil 2230 may be the same or different from each other.
  • the selector 222 may receive an AC power signal having a specific frequency from the driver 221 and transmit the AC power signal to a transmission coil selected from a plurality of transmission coils.
  • the coil selector 222 may transmit the C power signal to the transmission coil selected by the controller 240 according to a predetermined control signal of the controller 240.
  • the coil selector 222 may control the AC power signal to be transmitted to the coil selected by the controller @ 40 according to a predetermined control signal of the controller 240.
  • the selector 222 may include a switch (not shown) that connects the LC resonant circuit to the plurality of transmission coils 2230. The selector 222 may be excluded from the power transmitter 220 when the transmitter coil 223 is configured as one transmitter coil.
  • the transmitting coil 223 may include at least one transmitting coil, and may transmit the AC power signal received from the selector 222 to the receiver through the corresponding transmitting coil. When there are a plurality of transmitting coils, the transmitting coils may be transmitted to the receiver. When there are a plurality of transmitting coils, the transmitting coil 2230 may include first to nth transmitting coils.
  • the selector 222 may be implemented as a switch or a multiplexer to select a corresponding transmission coil from a plurality of transmission coils.
  • the transmitting coil 223 may include one capacitor (not shown) connected in series with the plurality of transmitting coils to implement the LC resonant circuit.
  • the capacitor may be connected to the transmitting coil 223, and the other end thereof may be connected to the driving unit 221.
  • the "corresponding transmission coil” may refer to a transmission coil having a state that can be coupled by an electromagnetic field and a reception coil of a wireless power receiver to which kwrur is provided to receive power wirelessly.
  • the control unit 240 dynamically modulates a transmission coil to be used for wireless power transmission among a plurality of transmission coils provided based on a signal strength indicator received in response to a digital ping signal transmitted for each transmission coil. Can be selected.
  • the controller 240 may control the selector 222 or the multiplexer so that the sensing signals may be sequentially transmitted through the first to nth transmitting coils 2230 during the first sensing signal transmitting procedure.
  • the controller 240 may identify a time point at which the detection signal is transmitted by using the timer 290.
  • the control unit 240 controls the selection unit 222 or the multiplexer to sense the time through the corresponding transmission coil. It can be controlled to send out a signal.
  • the timer 290 may transmit a specific event signal to the controller 240 at a predetermined period during the ping transmission step.
  • the controller 240 controls the selector 222 or the multiplexer to control the corresponding event signal.
  • the digital ping can be controlled through the transmitting coil.
  • the modulator 231 may modulate the control signal generated by the controller 240 and transmit the modulated control signal to the driver 2210.
  • the modulation scheme for modulating the control signal is a frequency shift keying (FSK) modulation scheme, a Manchester coding modulation scheme, a PSK (Phase Shift Keying) modulation scheme, a pulse width modulation scheme, a differential 2 Differential bi-phase modulation may be included, but is not limited thereto.
  • the demodulator 232 may demodulate the detected signal and transmit the demodulated signal to the controller 240.
  • the demodulated signal may include a signal strength indicator, an error correction (EC) indicator for controlling power during wireless power transmission, an end of charge (DOC) indicator, an overvoltage / overcurrent / overheat indicator, and the like.
  • EC error correction
  • DOC end of charge
  • the present invention is not limited thereto, and may include various state information for identifying a state of the wireless power receiver.
  • the demodulator 232 may identify from which transmission coil the demodulated signal is a signal, and may provide the control unit 240 with a predetermined transmission coil identifier corresponding to the identified transmission coil.
  • the wireless power transmitter 200 may obtain the signal strength indicator through in-band communication that communicates with the wireless power receiver using the same frequency used for wireless power transmission.
  • the wireless power transmitter 200 may transmit wireless power using the transmission coil 223 and may exchange various information with the wireless power receiver through the transmission coil 223.
  • the wireless power transmitter 200 may further include a separate coil corresponding to each of the transmitting coils, that is, the first to nth transmitting coils, and may be connected to the wireless power receiver using the provided separate coils. Band communication may be performed.
  • the storage unit 270 is an input current value of the wireless power transmitter according to the charging state of the wireless power receiver, the charging power strength, whether the charging is stopped, the temperature of the wireless power transmitter for charging restart, the time after the charging stop for charging restart, the fan You can save the operation status, fan RPM, etc.
  • the fan 280 may rotate the motor to cool the wireless power transmitter 200 that is overheated.
  • the fan 280 may be disposed to correspond to a configuration in which the degree of overheating is severe.
  • the fan 280 may be disposed to correspond to the power transmitter 220.
  • the fan 280 may be disposed to correspond to the transmission coil 223 of the power transmitter 220.
  • the controller 240 may operate the fan 280 according to the charging state of the wireless power receiver.
  • the short range communication unit 201 may perform short range bidirectional communication through a frequency band different from a frequency band used for wireless power signal transmission.
  • the near-field bidirectional communication may be Near Field Communication (NFC).
  • NFC is one of Radio Frequency Identification (RFID) technologies, which uses a frequency of 13.56 MGz to exchange various wireless data within a short distance of 10 cm.
  • RFID Radio Frequency Identification
  • the wireless communication coil 202 may transmit / receive a signal used in short-distance bidirectional communication with a wireless power receiver.
  • Figure 3 is an exploded perspective view of the wireless charging device according to an embodiment
  • Figure 4 is a perspective view of the wireless charging device according to an embodiment
  • Figure 5 is a rear perspective view of the wireless charging device according to an embodiment
  • Figure 6 3 is a side view showing a cross section taken along the line A-A 'of the wireless charging device shown in Figure 3
  • Figure 7 is a side view showing a cross section taken along the line B-B' of the wireless charging device shown in FIG. .
  • the wireless charging device includes a heat dissipation sheet 300, a substrate 400, a first shielding material 500, a wireless communication coil 600, a second shielding material 700, and The wireless charging coil module 800 may be included.
  • the heat dissipation sheet 300 may radiate heat to the outside of the wireless charging device when heat generated from the wireless charging coil module 800 is directly transmitted through the shielding material or transmitted through the heat dissipation hole of the shielding material.
  • the heat dissipation sheet 300 may be made of a material having high thermal conductivity or high thermal emissivity. For example, it may include aluminum. However, the present invention is not limited thereto and may include various heat dissipating materials.
  • the heat dissipation sheet 300 may support the first shielding material 500, the second shielding material 700, and the wireless charging coil module 800.
  • the area of the heat radiation sheet 300 may be larger than the areas of the first shielding material 500 and the second shielding material 700 disposed thereon.
  • the heat dissipation sheet 300 may include a first hole h1, a second hole h2, a third hole h3, and a fourth hole h4.
  • the first through fourth holes h1 through h4 formed in the heat dissipation sheet 300 may be connected to other substrates (not shown) or the case (not shown) by a fastening member (not shown).
  • the heat dissipation sheet 300 may form a receiving groove 310 so that the substrate 400 is disposed on one side.
  • one side of the heat dissipation sheet 300 forms an accommodating groove from the outside to the inside, and the accommodating groove 310 may correspond to the size, shape, and position where the substrate 400 may be accommodated.
  • the substrate 400 accommodated in the accommodation groove 310 formed in the heat dissipation sheet 300 may be rigid.
  • the substrate 400 may include a plurality of pin holes (Ph).
  • Connection pins P1 to P24 are inserted into the pin holes Ph so as to extend from the top surface 400a of the substrate 400 to the bottom surface 400b.
  • Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • the lower surface of the substrate 400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • PS connection pin supporter
  • the connection pin supporter Ps may allow the plurality of connection pins to be firmly fixed to the substrate 400, and protect the plurality of connection pins P1 to P24.
  • connection pin supporter Ps may be disposed on the bottom surface of the substrate 400 corresponding to the plurality of connection pins P1 to P24.
  • the area of the connection pin supporter Ps may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 400 may include one or more temperature sensors 900: 910. 920. 930.
  • One or more temperature sensors may be disposed on the upper surface 400a of the substrate 400.
  • the plurality of temperature sensors 900 may include first to third temperature sensors 910, 920, and 930.
  • the first to third temperature sensors 910, 920, and 930 may be connected to and correspond to the wireless charging coils 810, 820, and 830 of the wireless charging coil module 800.
  • the first temperature sensor 910 may be disposed on the upper surface 400a of the substrate to be connected to one side of the first wireless charging coil 810.
  • the second temperature sensor 920 may be disposed on the upper surface 400a of the substrate to be connected to one side of the second wireless charging coil 820.
  • the third temperature sensor 930 may be disposed on the upper surface 400a of the substrate to be connected to one side of the third wireless charging coil 830.
  • the first to third temperature sensors 910, 920, and 930 are through holes 510: 511, 512, and 513 of the first shielding material 500, and through holes 710: 711, of the second shielding material 700, respectively. 712 and 713 may be disposed.
  • the first temperature sensor 910 is disposed on the upper surface 400a of the substrate to correspond to the first through hole 511 of the first shielding material 500 and the first through hole 711 of the second shielding material 700.
  • the second temperature sensor 920 may be disposed on the upper surface 400a of the substrate to correspond to the second through hole 512 of the first shielding material 500 and the second through hole 712 of the second shielding material 700. have.
  • the third temperature sensor 930 may be disposed on the upper surface 400a of the substrate in correspondence with the third through hole 513 of the first shielding material 500 and the third through hole 713 of the second shielding material 700. .
  • one or more temperature sensors 900: 910. 920. 930 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 800.
  • the one or more temperature sensors 900: 910. 920. 930 are disposed under a separate substrate (not shown), and thus, the temperature may be measured adjacent to the wireless charging coil module 800.
  • each of the temperature sensors 910, 920, and 930 may be connected to a connection pin P formed on the substrate 400.
  • the connection part (not shown) extending from the first temperature sensor 910 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 920 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 930 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 910, 920, and 930 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the first shielding material 500 may be disposed on the heat dissipation sheet 300.
  • An adhesive or an adhesive member (not shown) may be disposed and fixed to the first shielding material 500 and the heat dissipation sheet 300.
  • the first shielding material 500 may include through-holes 510 (511, 512, 513) at positions, sizes, and shapes corresponding to the temperature sensors 900 disposed on the substrate 400.
  • the first shielding material 500 supports a second shielding material 700 disposed on the first shielding material 500, and a function for improving performance of the wireless communication coil 600 wound around the second shielding material 700. Can be performed. That is, the first shielding member 500 may be formed larger than the size of the second shielding member 700.
  • the first shielding member 500 may be formed to a size that allows all four directions to protrude to twice or more than the thickness of the wireless communication coil wound to the outer surface of the second shielding member 700.
  • the wireless communication coil 600 may be disposed to be wound a plurality of times so as to surround the side surface of the second shielding material 700 in a helical form.
  • the helical form refers to the coils being wound while overlapping in the height (vertical) direction. That is, it refers to a wireless communication coil wound by vertically stacked.
  • the wireless communication coil 600 may be formed of a cotton yarn, a Litz wire, an enameled copper wire, or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • the recognition rate can be improved because the resistance is lower than the coil pattern, and the cost is low, it can have a material cost reduction effect.
  • the second shielding member 700 is disposed on the first shielding member 500 and the substrate 400 and supports the wireless charging coil module 800.
  • the first shielding member 500 may be disposed below the second shielding member 700
  • the wireless charging coil module 800 may be disposed above the second shielding member 700.
  • the first shielding material 500, the substrate 400, and the wireless charging coil module 800 may be fixed to upper and lower portions of the second shielding material 700 by adhesives or adhesive members, respectively.
  • the second shielding member 700 may be disposed on a lower surface of the wireless charging coil module 800 to support the wireless charging coil module 800.
  • the second shielding material 700 may be disposed on the bottom surfaces of the second wireless charging coil 820 and the third wireless charging coil 830. have.
  • An adhesive or an adhesive member (not shown) is disposed between the upper surface of the second shielding member 700 and the lower surface of the second wireless charging coil 820 and the third wireless charging coil 830, so that the shielding member 700 and the second and The third wireless charging coils 820 and 830 may be fixed.
  • the second shielding material 700 may guide the wireless power generated from the wireless charging coil module 800 disposed in the upper direction in the charging direction, and may protect various circuits disposed below from the electromagnetic field.
  • the second shielding member 700 may include first to third through holes 710: 711, 712, and 713.
  • the first through third through holes 711, 712, and 713 of the second shielding material 700 may be formed in sizes, shapes, and positions corresponding to temperature sensors disposed in the substrate 400, respectively.
  • the second shielding member 700 may be formed with a cable access portion 720 of the recess structure. The cable access part 720 of the second shielding material 700 may secure a space of the charging coil connection part when the charging coil connection part of the wireless charging coil is connected to the connection pin disposed on the substrate 400.
  • the second shielding member 700 may be wound with a wireless communication coil 600 along a side surface thereof.
  • the second shielding member 700 and the wireless communication coil 600 may be fixed by an adhesive or an adhesive member (not shown).
  • the wireless communication coil 600 may be wound N times to surround the side surface of the second shielding material 700. 6 and 7, the wireless communication coil 600 is formed by winding the second shielding material three times.
  • the wireless communication coil 600 is formed to surround the side surface of the second shielding material 700, and is formed at positions spaced apart from the heights of the second shielding material 700 by the threshold values T1 and T2, respectively. Can be. Specifically, the wireless communication coil 600 has a thickness of 0.5 mm (T3_1, T3_2, T3_3), and the winding height of the wireless communication coil wound around the second shielding material 700 by winding the wireless communication coil of 0.5 mm three times ( T3) may be formed to 1.5 mm. At this time. The wireless communication coil 600 may be wound at a position spaced at least 0.5 mm (T1) from the top of the second shielding material 700 and at least 0.5 mm (T2) from the bottom.
  • T1 0.5 mm
  • the first turned wireless communication coil 610 is formed at a position spaced 0.5 mm (T1) or more from an upper portion of the second shielding material 700, and is sequentially wound in a downward direction to the third turned wireless communication coil (
  • the 630 may be formed at a position spaced at least 0.5 mm (T2) from the lower portion of the second shielding material 700. Therefore, the height T4 of the second shielding member 700 may be formed to have at least 2.5mm or more.
  • One side and the other side of the wireless communication coil 600 may be connected to the connection pin (P), respectively.
  • one side of the wireless communication coil 600 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. Can be.
  • the wireless charging coil module 800 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto, and may be wound at different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include first wireless charging coils 810 to third wireless charging coils 830.
  • the second wireless charging coil 820 and the third wireless charging coil 830 may be disposed on the first layer disposed on the same layer.
  • the first wireless charging coil 810 may be disposed on the second layer and disposed on the second wireless charging coil 820 and the third wireless charging coil 830. Therefore, the charging region can be extended to arrange the plurality of wireless charging coils in different layers to efficiently transfer the wireless power.
  • the distance between the wireless communication coil 500 and the wireless charging coil module 700 may be based on the second wireless charging coil 720 and the third wireless charging coil 730 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wires or cables coated with a sheath.
  • the first wireless charging coil 810 may include a first-first charging coil connection 811 and a second-second charging coil connection 812.
  • the first-first charging coil connection unit 811 may extend to a coil wire disposed outside the first wireless charging coil 810.
  • the 1-2 charging coil connection part 812 may extend from a coil line disposed inside the first wireless charging coil 810.
  • the second wireless charging coil 820 may include a 2-1 charging coil connector 821 and a 2-2 charging coil connector 822.
  • the 2-1 charging coil connection unit 821 may extend from a coil line disposed outside the second wireless charging coil 820.
  • the second-2 charging coil connection unit 822 may extend from a coil line disposed inside the second wireless charging coil 820.
  • the third wireless charging coil 830 may include a 3-1 charging coil connector 831 and a 3-2 charging coil connector 832.
  • the 3-1 charging coil connection unit 831 may extend from a coil line disposed outside the third wireless charging coil 830.
  • the third-2 charging coil connection unit 832 may extend from a coil line disposed inside the third wireless charging coil 830.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • each of the first and second connection lines of the wireless charging coil may extend in the direction of the cable access part 720 disposed on one side of the second shielding material 700.
  • the 3-1 charging coil connection part 831 and the 3-2 charging coil connection part 832 of the 821, the 2-2 charging coil connection part 822, and the third wireless charging coil 830 are respectively shielded materials 700.
  • a part of the first to third charging coil connection parts 811 to 832 is disposed in the recess formed by the cable access part 720 to solder the connection pins P1 to P24. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface 400a of the substrate 400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as shown in FIG. 7, when there are a plurality of wireless charging coils, the second wireless charging coil 820, the first wireless charging coil 810, and the third wireless charging coil 830 may be arranged in the order.
  • the second-second charging coil connection part 822 of the second wireless charging coil 820 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 821 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection part 812 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 811 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the third-second charging coil connection part 832 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 th charging coil connection part 831 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection parts 811, 812, 821, 822, 831, and 832 connected to each connection pin P are spaced apart from the substrate 400 by a predetermined interval (T5_1, T5_2, T5_3, and T5_4) when they are connected between the connection pins. , T5_5 and T5_6) may be disposed.
  • each charging coil connection part 811, 812, 821, 822, 831, and 832 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pin. .
  • the soldering jig is used to solder the charging coil connection part and the connecting pin, and the soldering jig is removed.
  • the charging coil connection part is suspended from the substrate 400 by a predetermined interval (T5_1 to T5_6).
  • the wireless charging device configures a first shielding material for a wireless communication coil and a second shielding material for a wireless charging coil.
  • a first shielding material for a wireless communication coil and a second shielding material for a wireless charging coil.
  • the wireless communication coil may have an effective characteristic according to the decrease in the directional resistance and the improvement of the recognition rate.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • FIG. 8 is an exploded perspective view of a wireless charging device according to another embodiment
  • Figure 9 is a perspective view of a wireless charging device according to another embodiment
  • Figure 10 is cut along the line A-A 'of the wireless charging device shown in FIG. 11 is a cross-sectional view showing one cross section
  • FIG. 11 is a cross-sectional view showing a cross section taken along the line B-B 'of the wireless charging device shown in FIG. 9,
  • FIG. 12 is a C-C of the wireless charging device shown in FIG. Is a cross-sectional view taken along the section
  • another wireless charging device includes a heat dissipation sheet 300, a substrate 400, a first shielding material 500, a wireless communication coil 600, a second shielding material 700, and The wireless charging coil module 800 may be included.
  • the heat dissipation sheet 300 may directly transfer heat generated from the wireless charging coil module 800 through the shielding material, or may transmit heat to the outside of the wireless charging device when it is transmitted through the heat dissipation hole of the shielding material.
  • the heat dissipation sheet 300 may be made of a material having high thermal conductivity or high thermal emissivity. For example, it may include aluminum. However, the present invention is not limited thereto and may include various heat dissipating materials.
  • the heat dissipation sheet 300 may support the first shielding material 500, the second shielding material 700, and the wireless charging coil module 800.
  • the area of the heat radiation sheet 300 may be larger than the areas of the first shielding material 500 and the second shielding material 700 disposed thereon.
  • the heat dissipation sheet 300 may include a first hole h1, a second hole h2, a third hole h3, and a fourth hole h4.
  • the first through fourth holes h1 through h4 formed in the heat dissipation sheet 300 may be connected to other substrates (not shown) or the case (not shown) by a fastening member (not shown).
  • the heat dissipation sheet 300 may form a receiving groove 1310 so that the substrate 400 is disposed on one side.
  • the heat dissipation sheet 300 forms an accommodation groove from the outside to the inside on one side, and the accommodation groove 1310 may correspond to the size, shape, and position where the substrate 400 may be accommodated.
  • the substrate 400 accommodated in the receiving recess 91110 formed in the heat dissipation sheet 300 may be rigid.
  • the substrate 400 may include a plurality of pin holes (Ph).
  • Connection pins P1 to P24 are inserted into the pin holes Ph to extend from the top surface to the bottom surface of the substrate 400.
  • Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • the lower surface of the substrate 400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • PS connection pin supporter
  • the connection pin supporter Ps allows the plurality of connection pins to be firmly lowered and lowered on the substrate 400, and protects the plurality of connection pins P1 to P24.
  • connection pin supporter Ps may be disposed on the bottom surface of the substrate 400 corresponding to the plurality of connection pins P1 to P24.
  • the area of the connection pin supporter Ps may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 400 may include one or more temperature sensors 900: 1910. 1920. 1930.
  • the one or more temperature sensors 900 may include first to third temperature sensors 1910, 1920, and 1930.
  • the first to third temperature sensors 1010, 1920. 1930 may be arranged to be connected to the outer charging coils 1810, 1820, 1830 of the wireless charging coil module 800.
  • the first temperature sensor 1910 may be disposed on the upper surface 400a of the substrate 400 to be connected to one side of the first wireless charging coil 800.
  • the second temperature sensor 920 may be disposed on the upper surface 400a of the substrate 400 to be connected to one side of the second wireless charging coil 820.
  • the third temperature sensor 930 may be disposed on the upper surface 400a of the substrate 400 to be connected to one side of the third wireless charging coil 830.
  • the first to third temperature sensors 910, 920, and 930 are disposed corresponding to the through holes 510: 511, 512, 513 of the first shielding material 500, and the through holes 1710: 711, 712, 713 of the second shielding material 700, respectively.
  • the first temperature sensor 910 corresponds to the top surface 400a of the substrate 400 to correspond to the first through hole 511 of the first shielding material 500 and the first through hole 711 of the second shielding material 700.
  • the second temperature sensor 920 corresponds to the second through hole 512 of the first shielding material 500 and the second through hole 712 of the second shielding material 700.
  • the third temperature sensor 930 corresponds to the upper surface 400a of the substrate 400 in correspondence with the third through hole 513 of the first shielding material 500 and the third through hole 713 of the second shielding material 700. Can be deployed.
  • one or more temperature sensors 900: 910, 920, and 930 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 800.
  • one or more temperature sensors 900: 1910. 1920. 1930 may be disposed under a separate substrate (not shown), and thus, may measure a temperature adjacent to the wireless charging coil module 800.
  • each of the temperature sensors 910, 920, and 930 may be connected to a connection pin P formed on the substrate 400.
  • the connection part (not shown) extending from the first temperature sensor 910 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 920 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 930 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 910, 920, and 930 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the first shielding material 500 may be disposed on the heat dissipation sheet 300.
  • An adhesive or an adhesive member (not shown) may be disposed and fixed to the first shielding material 500 and the heat dissipation sheet 300.
  • the first shielding material 500 may include through-holes 510: 511.512.513 corresponding to the position, size, and shape corresponding to the temperature sensor 900 disposed on the substrate 400.
  • the first shielding material 500 supports a second shielding material 700 disposed on the first shielding material 500, and a function for improving performance of the wireless communication coil 600 wound around the second shielding material 700. Can be performed.
  • the first shielding material 500 supports the second shielding material 700 disposed on the first shielding material 500 and improves the performance of the wireless communication coil 600 wound around the second shielding material 700.
  • the first shielding member 500 may include a bottom portion 501 and a shielding wall 502.
  • the first shielding material 500 may include a bottom portion 501 adhered to the second shielding material 700 and a shielding wall 502 formed to surround the outer region of the first shielding material 500.
  • the shielding wall 502 may form an open area 520 on one side. The open area may be formed in a direction and a space in which each coil connection portion of the wireless charging coil may be drawn out.
  • the open area 520 is not an essential configuration, the open area 520 is not formed, the shielding wall 502 may be formed in a closed loop shape.
  • the bottom part 501 of the first shielding material 500 may form a connection part through hole (not shown).
  • the connection part through hole may be formed to correspond to the wireless charging coil connection part to penetrate the coil connection part of the wireless charging coil.
  • the shielding wall 502 may be formed to the height of the second shielding material 700. Specifically, referring to FIGS. 10 and 11, the height T7 of the shielding wall 502 may extend to the height T6 of the second shielding material 700.
  • the wireless communication coil 600 may be disposed to be wound a plurality of times so as to surround the side surface of the second shielding material 700 in a helical form.
  • the helical form refers to the coils being wound while overlapping in the height (vertical) direction. That is, it refers to a wireless communication coil wound by vertically stacked.
  • the wireless communication coil 600 may be formed of a cotton yarn, a Litz wire, an enameled copper wire, or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • the recognition rate can be improved because the resistance is lower than the coil pattern, and the cost is low, it can have a material cost reduction effect.
  • One side and the other side of the wireless communication coil 600 may be connected to the connection pin (P), respectively.
  • one side of the wireless communication coil 600 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. Can be.
  • the second shielding member 700 is disposed on the first shielding member 500 and the substrate 400 and supports the wireless charging coil module 800.
  • the first shielding member 500 may be disposed below the second shielding member 700
  • the wireless charging coil module 800 may be disposed above the second shielding member 700.
  • the first shielding material 500, the substrate 400, and the wireless charging coil module 800 may be fixed to the upper and lower portions of the second shielding material 700 by adhesives or adhesive members, respectively.
  • the second shielding member 700 may be disposed on a lower surface of the wireless charging coil module 800 to support the wireless charging coil module 800.
  • the second shielding material 700 may be disposed on the bottom surfaces of the second wireless charging coil 820 and the third wireless charging coil 830.
  • An adhesive or an adhesive member (not shown) is disposed between the upper surface of the second shielding member 700 and the lower surface of the second wireless charging coil 820 and the third wireless charging coil 830, so that the shielding member 700 and the second and The third wireless charging coils 820 and 830 may be fixed.
  • the second shielding material 700 may guide the wireless power generated from the wireless charging coil module 800 disposed in the upper direction in the charging direction, and may protect various circuits disposed below from the electromagnetic field.
  • the second shielding member 700 may include first to third through holes 1710: 711, 712, and 713.
  • the first to third through holes 711, 712, and 713 of the second shielding material 700 may be formed to correspond to the position, size, and shape corresponding to the temperature sensor 900 disposed on the substrate 400.
  • the second shielding member 700 may be formed with a cable access portion 720 of the recess structure. The cable access part 720 of the second shielding material 700 may secure a space of the charging coil connection part when the charging coil connection part of the wireless charging coil is connected to the connection pin disposed on the substrate 400.
  • the second shielding member 700 may be wound around the wireless communication coil 600.
  • the second shielding member 700 and the wireless communication coil 600 may be fixed by an adhesive or an adhesive member (not shown).
  • the wireless communication coil 600 may be wound N times to surround the side surface of the second shielding material 700.
  • the wireless communication coil 600 is formed by winding the second shielding material three times.
  • the wireless communication coil 600 may be formed to surround the side surface of the second shielding material 700, and may be formed at positions spaced apart by thresholds T1 and T2 from the height of the second shielding material 700, respectively. have. Specifically, the wireless communication coil 600 has a thickness of 0.5 mm (T3_1, T3_2, and T3_3), and the winding height T3 of the wireless communication coil in which the 0.5 mm wireless communication coil is wound three times and wound around the second shielding material 700. ) May be formed to 1.5 mm. In this case, the wireless communication coil 600 may be wound at a position spaced at least 0.5 mm (T1) from the top of the second shielding material 700 and at least 0.5 mm (T2) from the bottom.
  • T1 0.5 mm
  • T2 0.5 mm
  • the first turned wireless communication coil 1610 is formed at a position spaced 0.5 mm (T1) or more from the upper portion of the second shielding material 700, and is sequentially wound in a downward direction to the third turned wireless communication coil (
  • the 1630 may be formed at a position spaced at least 0.5 mm (T2) from the lower portion of the second shielding material 700. Therefore, the height T6 of the second shielding member 700 may be formed to have at least 2.5mm or more.
  • the wireless charging coil module 800 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto, and may be wound at different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include first wireless charging coils 810 to third wireless charging coils 830.
  • the second wireless charging coil 820 and the third wireless charging coil 830 may be disposed on the first layer disposed on the same layer.
  • the first wireless charging coil 810 may be disposed on the second layer and disposed on the second wireless charging coil 820 and the third wireless charging coil 830. Accordingly, the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transfer the wireless power.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wires or cables coated with a sheath.
  • the first wireless charging coil 810 may include a first-first charging coil connection 811 and a second-second charging coil connection 812.
  • the first-first charging coil connection unit 811 may extend to a coil wire disposed outside the first wireless charging coil 810.
  • the 1-2 charging coil connection part 812 may extend from a coil line disposed inside the first wireless charging coil 810.
  • the second wireless charging coil 820 may include a 2-1 charging coil connector 821 and a 2-2 charging coil connector 822.
  • the 2-1 charging coil connection unit 821 may extend from a coil line disposed outside the second wireless charging coil 820.
  • the second-2 charging coil connection unit 822 may extend from a coil line disposed inside the second wireless charging coil 820.
  • the third wireless charging coil 830 may include a 3-1 charging coil connector 831 and a 3-2 charging coil connector 1832.
  • the 3-1 charging coil connection unit 831 may extend from a coil line disposed outside the third wireless charging coil 830.
  • the third-2 charging coil connection unit 832 may extend from a coil line disposed inside the third wireless charging coil 830.
  • a part of the first to third charging coil connection parts 811 to 832 is disposed in the recess formed by the cable access part 720 to solder the connection pins P1 to P24. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • each of the first and second connection lines of the wireless charging coil extends in the direction of the cable entry part 720 disposed on one side of the second shielding material 700 and the open area 520 of the first shielding material 500.
  • the first-first charging coil connection part 811 and the second-second charging coil connection part 812 of the first wireless charging coil 810, and the second-first charging coil connection part of the second wireless charging coil 820 are examples.
  • the 3-1 charging coil connection unit 1831 and the 3-2 charging coil connection unit 1832 of the 1821, the second-2 charging coil connection unit 1822, and the third wireless charging coil 1830 may each have a second shielding material.
  • the cable access part 1720 disposed on one side of the 700 and the first shielding material 500 may extend in an open area 1520 direction.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface 400a of the substrate 400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as shown in FIG. 12, when there are a plurality of wireless charging coils, the second wireless charging coil 820, the first wireless charging coil 810, and the third wireless charging coil 830 may be arranged in this order.
  • the second-second charging coil connection part 822 of the second wireless charging coil 820 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 821 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection part 812 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 811 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the third-second charging coil connection part 832 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 th charging coil connection part 831 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection parts 811, 812, 821, 822, 831, 832 connected to each connection pin P may be disposed at positions spaced apart from the substrate 400 by a predetermined distance (T8_1, T8_2, T8_3, T8_4, T8_5, T8_6) from the substrate 400. Can be.
  • each charging coil connection part 811, 812, 821, 822, 831, 832 performs a soldering process for electrically connecting the charging coil connection part and the connection pin when soldered to each connection pin P.
  • the soldering jig is used to solder the charging coil connection part and the connecting pin, and the soldering jig is removed.
  • the charging coil connection part is suspended from the substrate 400 by a predetermined interval (T8_1 to T8_6).
  • the wireless charging device comprises a first shielding material for the wireless communication coil and a second shielding material for the wireless charging coil.
  • a shielding wall on the first shielding material, and by winding the wireless communication coil to the second shielding material in a helical manner, it is possible to increase the inductance of the radio communication coil and reduce the resistance value, thereby improving the recognition rate.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • FIG. 13 is an exploded perspective view of a wireless charging device according to another embodiment
  • FIG. 14 is a perspective view of a wireless charging device according to another embodiment
  • FIG. 15 is A-A 'of the wireless charging device shown in FIG. Therefore, it is sectional drawing which shows the cross section cut
  • a wireless charging device includes a heat dissipation sheet 300, a substrate 400, a shielding material 700, a wireless communication coil 600, and a wireless charging coil module 800. It may include.
  • the heat dissipation sheet 300 may radiate heat to the outside of the wireless charging device when heat generated from the wireless charging coil module 800 is directly transmitted through the shielding material or transmitted through the heat dissipation hole of the shielding material.
  • the heat dissipation sheet 300 may be made of a material having high thermal conductivity or high thermal emissivity. An example may include aluminum, but is not limited thereto, and may include various heat dissipating materials.
  • the heat dissipation sheet 300 may support the shielding material 700, the wireless communication coil 600, and the wireless charging coil module 800. An area of the heat dissipation sheet 300 may be larger than an area of the shielding material 700 disposed thereon.
  • the heat dissipation sheet 300 may include a first hole h1, a second hole h2, a third hole h3, and a fourth hole h4.
  • the first through fourth holes h1 through h4 formed in the heat dissipation sheet 300 may be connected to other substrates (not shown) or the case (not shown) by a fastening member (not shown).
  • the heat dissipation sheet 300 may form a receiving groove 2310 so that the substrate 400 is disposed on one side.
  • one side of the heat dissipation sheet 300 forms an accommodating groove from the outside to the inside, and the accommodating groove 2310 may correspond to the size, shape, and position where the substrate 400 may be accommodated.
  • the substrate 400 accommodated in the accommodation groove 2310 formed in the heat dissipation sheet 300 may be rigid.
  • the substrate 400 may include a plurality of pin holes (Ph). Connection pins P1 to P24 are inserted into each pin hole Ph so as to extend from the upper surface 400a of the substrate 300 to the lower surface.
  • the wireless charging coil module may be electrically connected by the connection pins P1 to P24.
  • the lower surface of the substrate 400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • PS connection pin supporter
  • the connection pin supporter PS may allow the plurality of connection pins to be firmly fixed to the substrate 400, and protect the plurality of connection pins P1 to P24.
  • connection pin supporter PS may be disposed on the bottom surface of the substrate 400 corresponding to the plurality of connection pins P1 to P24.
  • the area of the connection pin supporter PS2 may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 400 may include one or more temperature sensors 900: 910 and 920. 930.
  • One or more temperature sensors may be disposed on the upper surface 400a of the substrate 400.
  • the plurality of temperature sensors 900 may include first to third temperature sensors 910, 920, and 930.
  • the first to third temperature sensors 910, 920, and 930 may be connected to and correspond to the wireless charging coils 810, 820, and 830 of the wireless charging coil module 800.
  • the first temperature sensor 910 may be disposed on the upper surface 400a of the substrate to be connected to one side of the first wireless charging coil 810.
  • the second temperature sensor 920 may be disposed on the upper surface 400a of the substrate to be connected to one side of the second wireless charging coil 820.
  • the third temperature sensor 930 may be disposed on the upper surface 400a of the substrate to be connected to one side of the third wireless charging coil 830.
  • the second to third temperature sensors 910, 920, and 930 may be disposed to correspond to the through holes 710: 711, 712, 713 of the shielding material 700, respectively.
  • the first temperature sensor 910 may be disposed on the upper surface 400a of the substrate to correspond to the first through hole 711 of the shielding material 700.
  • the second temperature sensor 920 may be disposed on the upper surface 400a of the substrate to correspond to the second through hole 712 of the shielding material 700.
  • the third temperature sensor 930 may be disposed on the upper surface 400a of the substrate in response to the third through hole 713 of the shielding material 700.
  • one or more temperature sensors 900: 910. 920. 930 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 800.
  • the one or more temperature sensors 900: 910. 920. 930 are disposed under a separate substrate (not shown), and thus, the temperature may be measured adjacent to the wireless charging coil module 800.
  • each of the temperature sensors 910, 920, and 930 may be connected to a connection pin P formed on the substrate 400.
  • the connection part (not shown) extending from the first temperature sensor 910 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 920 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 930 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 910, 920, and 930 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the wireless communication coil 600 may be disposed to be wound a plurality of times so as to surround the side surface of the shielding material 700 in a helical form.
  • the helical form refers to the coils being wound while overlapping in the height (vertical) direction. That is, it refers to a wireless communication coil wound by vertically stacked.
  • the wireless communication coil 600 is a cotton yarn, a Litz wire. It may be formed of an enameled copper wire or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • a separate PCB substrate is not required, so that the overall thickness of the wireless charger can be reduced.
  • the recognition rate can be improved because the resistance is lower than that of the coil pattern, and the cost can be reduced, thereby reducing the material cost.
  • One side and the other side of the wireless communication coil 600 may be connected to the connection pin (P), respectively.
  • one side of the wireless communication coil 600 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. Can be.
  • the shielding material 700 may be disposed on the heat dissipation sheet 300.
  • the shielding material 700 and the heat dissipation sheet 300 may be fixed by placing an adhesive or an adhesive member (not shown).
  • the shield also supports the wireless charging coil module 800.
  • the shielding member 700 may include through holes 2710: 2711, 2712, and 2713 having positions, sizes, and shapes corresponding to the temperature sensors 800 disposed on the substrate 400.
  • the shield member 700 may be formed with a cable access portion 720 of the recess structure.
  • the cable access part 720 of the shielding material 700 may secure a space of the charging coil connection part when the charging coil connection part of the wireless charging coil is connected to the connection pin disposed on the substrate 400.
  • the wireless communication coil 600 may be wound along the side surface of the shielding material 700.
  • the shielding material 700 and the wireless communication coil 600 may be fixed by an adhesive or an adhesive member (not shown).
  • the wireless communication coil 600 may be formed by winding N times to surround the side of the shielding material 700.
  • the wireless communication coil 600 is formed by winding the shielding material 3 times.
  • the wireless communication coil 600 may be formed to surround the side surface of the shielding material 700.
  • the wireless communication coil 600 may be formed at a position spaced apart from the upper and lower portions of the shielding material 700 by threshold values T1 and T2, respectively.
  • the wireless communication coil 600 has a thickness of 0.5 mm (T3_1), and the winding height T3 of the wireless communication coil in which the 0.5 mm wireless communication coil is wound three times and wound on the shielding material 700 is formed to be 1.5 mm.
  • the wireless communication coil 600 may be wound at a position spaced at least 0.5 mm (T1) from the top of the shielding material 700 and at least 0.5 mm (T2) from the bottom.
  • the first turned wireless communication coil 2610 is formed at a position spaced 0.5 mm (T1) or more from the upper portion of the shielding material 700, and sequentially wound in the lower direction, the third turned wireless communication coil 2630 is a shielding material It may be formed at a position spaced at least 0.5mm (T2) from the bottom of the 700. Therefore, the height T4 of the shielding member 700 may be formed to have at least 2.5mm or more.
  • the wireless charging coil module 800 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto and may be wound around different turns. In addition, the wireless charging coil may have the same inductance. The present invention is not limited thereto and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include first wireless charging coils 810 to third wireless charging coils 830.
  • the second wireless charging coil 820 and the third wireless charging coil 830 may be disposed on the first layer disposed on the same layer.
  • the first wireless charging coil 810 may be disposed on the second layer and disposed on the second wireless charging coil 820 and the third wireless charging coil 830. Accordingly, the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wires or cables coated with a sheath.
  • the first wireless charging coil 810 may include a first-first charging coil connection 2811 and a second-second charging coil connection 2812.
  • the first-first charging coil connection unit 2811 may extend to a coil wire disposed outside the first wireless charging coil 810.
  • the 1-2 charging coil connection unit 2812 may extend from a coil line disposed inside the first wireless charging coil 810.
  • the second wireless charging coil 820 may include a 2-1 charging coil connector 2812 and a 2-2 charging coil connector 2822.
  • the 2-1 charging coil connection unit 2812 may extend from a coil line disposed outside the second wireless charging coil 820.
  • the second-2 charging coil connection unit 2822 may extend from a coil line disposed inside the second wireless charging coil 820.
  • the third wireless charging coil 830 may include a 3-1 charging coil connector 2831 and a 3-2 charging coil connector 2832.
  • the 3-1 charging coil connection unit 2831 may extend from a coil line disposed outside the third wireless charging coil 830.
  • the 3-2 charging coil connection unit 2832 may extend from a coil line disposed inside the third wireless charging coil 830.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • each of the first and second connection lines of the wireless charging coil may extend in the direction of the cable access part 720 disposed on one side of the shielding material 700.
  • the 3-1 charging coil connection part 831 and the 3-2 charging coil connection part 832 of the 2821, the second-2 charging coil connection part 822, and the third wireless charging coil 830 may be shielded material 700.
  • a part of the first to third charging coil connection parts 811 to 832 is disposed in the recess formed by the cable access part 720 to solder the connection pins P1 to P24. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface 400a of the substrate 400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as shown in FIG. 16, when there are a plurality of wireless charging coils, the second wireless charging coil 820, the first wireless charging coil 810, and the third wireless charging coil 830 may be arranged in the order.
  • the second-second charging coil connection part 822 of the second wireless charging coil 820 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 821 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection unit 2812 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 811 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the third-second charging coil connection unit 8 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 charging coil connection unit 2831 may be soldered and connected between the 19th and 20th connection pins (P19, P20).
  • Charging coil connection parts 811, 812, 821, 822, 831 and 832 connected to each connection pin P may be disposed at positions spaced apart from the substrate 400 by a predetermined distance (T5_1, T5_2, T5_3, T5_4, T5_5, T5_6) from the substrate 400. .
  • each charging coil connection part 811, 812, 821, 822, 831, 832 performs a soldering process for electrically connecting the charging coil connection part and the connection pin when soldered to each connection pin P.
  • the soldering jig is used to solder the charging coil connection part and the connecting pin, and the soldering jig is removed.
  • the charging coil connection part is spaced apart from the substrate 400 at a predetermined interval (T5_1, T5_2, T5_3, T5_4) for ease of process and soldering reliability. , T5_5, T5_6) to support the soldering.
  • the wireless charging device constitutes a single shielding material, and is configured by winding the wireless communication coil in a helical form on the side of the shielding material, thereby having a thin thickness and having an effect of improving directivity, resistance reduction, and recognition rate. Can be.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • Table 1 below shows the electrical characteristics of the improved wireless charging device according to the embodiment and the other embodiment.
  • the inductance increases and the resistance decreases according to the structural characteristics of the wireless communication coil and the structural characteristics of the shielding material according to the present embodiment. Also. As the vertical recognition distance is improved, the electrical performance may be improved as compared with a wireless communication coil configured in a printed pattern form on a conventional substrate.
  • FIG. 17 is an exploded perspective view of a wireless charging device according to another embodiment
  • Figure 18 is a perspective view of a wireless charging device according to another embodiment
  • Figure 19 is a rear perspective view of the wireless charging device according to an embodiment
  • Figure 20 Is a side view showing a cross section taken along the line A-A 'of the wireless charging device shown in Figure 17
  • Figure 21 is a side view showing a cross section taken along the line B-B' of the wireless charging device shown in FIG.
  • FIG. 22 is a side view illustrating a cross section taken along line CC ′ of the wireless charging device illustrated in FIG. 7.
  • the heat dissipation sheet 1300 is wirelessly charged when heat generated from the wireless charging coil module 1700 is directly transmitted through the shielding material 1600 or through the heat dissipation hole of the shielding material 1600. It can release heat to the outside of the device.
  • the heat dissipation sheet 1300 may be made of a material having high thermal conductivity or high thermal emissivity. For example, it may include aluminum. However, the present invention is not limited thereto and may include various heat dissipating materials.
  • the heat dissipation sheet 1300 may support the shielding material 600, the wireless communication coil 1500, and the wireless charging coil module 1700.
  • the area of the heat dissipation sheet 1300 may be larger than the area of the shielding material 1600 disposed thereon.
  • the heat dissipation sheet 1300 may include a first hole h1, a second hole h2, a third hole h3, and a fourth hole h4.
  • the first to fourth holes h1 to h4 formed in the heat dissipation sheet 1300 may be connected to other substrates (not shown) or the case (not shown) by a fastening member (not shown).
  • the heat dissipation sheet 1300 may form an accommodating groove 1310 so that the substrate 1400 is disposed at one side.
  • one side of the heat dissipation sheet 1300 may form an accommodation groove from the outside to the inside, and the accommodation groove 310 may correspond to the size, shape, and position at which the substrate 1400 may be accommodated.
  • the substrate 1400 accommodated in the accommodation groove 310 formed in the heat dissipation sheet 1300 may be rigid.
  • the substrate 1400 may include a plurality of pin holes (Ph).
  • Connection pins P1 to P24 are inserted into each pin hole Ph so as to extend from the upper surface 1400a of the substrate 1400 to the lower surface 1400b.
  • Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • a lower surface of the substrate 1400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • PS connection pin supporter
  • the connection pin supporter Ps may allow the plurality of connection pins to be firmly fixed to the substrate 1400, and protect the plurality of connection pins P1 to P24.
  • connection pin supporter Ps may be disposed on the bottom surface of the substrate 1400 corresponding to the plurality of connection pins P1 to P24.
  • the area of the connection pin supporter Ps may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 1400 may include one or more temperature sensors 1800: 1810, 1820, 1830.
  • One or more temperature sensors may be disposed on the top surface 1400a of the substrate 1400.
  • the plurality of temperature sensors 800 may include first to third temperature sensors 1810, 1820, and 1830.
  • the first to third temperature sensors 1810, 1820, 1830 may be connected to and disposed in correspondence with the wireless charging coils 1710, 1720, 1730 of the wireless charging coil module 1700.
  • the first temperature sensor 1810 may be disposed on the upper surface 1400a of the substrate to measure the temperature of one side of the first wireless charging coil 1710.
  • the second temperature sensor 1820 may be disposed on the upper surface 1400a of the substrate to measure the temperature of one side of the second wireless charging coil 1720.
  • the third temperature sensor 1830 may be disposed on the upper surface 1400a of the substrate to measure the temperature of one side of the third wireless charging coil 1730.
  • the first to third temperature sensors 1810, 1820, 1830 may be disposed corresponding to the through holes 1610: 1611, 1612, and 1613 of the shielding material 1600, respectively.
  • the first temperature sensor 1810 may be disposed on the upper surface 1400a of the substrate to correspond to the first through hole 1611 of the shielding material 1500.
  • the second temperature sensor 1820 may be disposed on the upper surface 1400a of the substrate to correspond to the second through hole 1612 of the shielding material 1600.
  • the third temperature sensor 1830 may be disposed on the upper surface 1400a of the substrate in correspondence with the third through hole 1613 of the shielding material 1600.
  • one or more temperature sensors 1800: 1810, 1820, 1830 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 1700.
  • one or more temperature sensors 1800: 1810, 1820, 1830 are disposed under a separate substrate (not shown), and have an advantage of measuring temperature adjacent to the wireless charging coil module 1700.
  • each of the temperature sensors 1810, 1820, and 1830 may be connected to a connection pin P formed on the substrate 1400.
  • the connection part (not shown) extending from the first temperature sensor 1810 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 1820 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 1830 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 1810, 1820, and 1830 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the shielding material 1600 may be disposed on the heat dissipation sheet 1300.
  • the shielding material 1600 and the heat dissipation sheet 1300 may be fixed by placing an adhesive or an adhesive member (not shown).
  • the shielding material 1600 may include through holes 1610: 1611, 1612, and 1613 having positions, sizes, and shapes corresponding to the temperature sensors 1800 disposed on the substrate 1400.
  • the shielding material 1600 supports the wireless communication coil 1500 and the wireless charging module 1700 disposed on the upper surface of the shielding material 1600 and improves the performance of the wireless communication coil 1500 and the wireless charging coil module 1700. Function can be performed.
  • the shielding material 1600 may guide the wireless power generated from the wireless charging coil module 1700 in the charging direction, and may protect various circuits disposed below from the electromagnetic field.
  • the wireless charging coil module 1700 may be disposed on the shielding material 1600, and the wireless communication coil 1500 may be wound and disposed to surround the wireless charging coil module 700.
  • the size of the shielding material 1600 may be formed to a size that the four directions can protrude to twice or more than the thickness of the wireless communication coil wound in a plane on the shielding material 1600.
  • the shielding member 1600 may be formed with a cable entry portion 1620 having a recess structure.
  • the cable access part 1620 of the shielding material 1600 may secure a space of the charging coil connection part when the charging coil connection part of the wireless charging coil is connected to the connection pin disposed on the substrate 1400.
  • the wireless communication coil 1500 may be disposed to be wound horizontally a plurality of times in a spiral shape to surround the wireless charging coil module 1700 on the upper surface of the shielding material 1600.
  • Spiral form refers to the winding while overlapping in the horizontal (horizontal) direction. That is, it refers to a wireless communication coil formed by winding a plurality of horizontally.
  • the wireless communication coil 1500 may be formed of a cotton yarn, a Litz wire, an enameled copper wire, or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • the wireless communication coil 1500 may be adhered and fixed by the shielding material 1600 and an adhesive or an adhesive member (not shown).
  • the wireless communication coil 1500 may be formed to be wound horizontally to surround the wireless charging coil module 1700. That is, the wireless communication coil 1500 may be formed to be disposed in the outer region of the shielding material 1600 in a spiral form on the plane of the shielding material 1600.
  • the wireless communication coil 1500 has a thickness T2 of the threshold.
  • the thickness of the wireless communication coil 1500 may be 0.5 mm.
  • a wireless communication coil wound around the wireless charging coil module 1700 on the upper surface of the shielding material 1600 and surrounding the wireless charging coil module 1700 is wound three times.
  • the width T4 of the wireless communication coil wound in a spiral shape on the plane of the shielding material 1600 may be 1.5 mm.
  • the thickness and the number of turns of the wireless communication coil as described above is not limited and may be configured in various sizes and widths according to the embodiment.
  • the wireless communication coil 1500 may be spaced apart from the wireless charging coil module 1700 by a threshold distance. That is, the wireless communication coil 1500 may be spaced apart from the wireless charging coil module by a distance T1 as shown in FIG. 7.
  • the separation distance T1 may be disposed two times or more than a thickness of the wireless communication coil 1500 to prevent leakage current. Therefore, the separation distance between the wireless charging coil module and the wireless communication coil may be preferably 1 mm or more.
  • the separation distance as described above is not limited, and may be implemented in various ranges according to wireless communication and wireless charging efficiency and performance.
  • the wireless communication coil 1500 may have the separation distances T1 ′ and T2 ′ from the outside to the inside of the shielding material 1600.
  • the separation distances T1 ′ and T2 ′ may be spaced at least twice or more than a thickness of the wireless communication coil 1500. Therefore, the wireless communication coil 1500 may be spaced at least 1 mm from the outside of the shielding material 1600.
  • the separation distance as described above is not limited, and may be implemented in various ranges according to wireless communication and wireless charging efficiency and performance.
  • One side and the other side of the wireless communication coil 1500 may be connected to the connection pin (P), respectively. Specifically, one side of the wireless communication coil 1500 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. Can be.
  • the wireless charging coil module 1700 disposed to surround the wireless communication coil 1500 disposed on the shielding material 1600 may include one or more wireless charging coils.
  • each wireless charging coil may be wound in the same number of turns.
  • the present invention is not limited thereto and may be wound around different turns.
  • the plurality of wireless charging coils may have the same inductance.
  • the present invention is not limited thereto, and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include the first wireless charging coil 1710 to the third wireless charging coil 1730.
  • the second wireless charging coil 1720 and the third wireless charging coil 1730 may be disposed on the first layer disposed on the same layer.
  • the first wireless charging coil 1710 may be disposed on the second layer and disposed on the second wireless charging coil 1720 and the third wireless charging coil 1730.
  • the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power.
  • the distance between the wireless communication coil 1500 and the wireless charging coil module 1700 may be based on the second wireless charging coil 1720 and the third wireless charging coil 1730 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wire or cable coated with a sheath.
  • the first wireless charging coil 1710 may include a 1-1 charging coil connection unit 1711 and a 1-2 charging coil connection unit 1712.
  • the first-first charging coil connection unit 1711 may extend to a coil wire disposed outside the first wireless charging coil 1710.
  • the 1-2 charging coil connection unit 1712 may extend from a coil line disposed inside the first wireless charging coil 1710.
  • the second wireless charging coil 1720 may include a 2-1 charging coil connector 1721 and a 2-2 charging coil connector 1722.
  • the 2-1 charging coil connection unit 1721 may extend from a coil line disposed outside the second wireless charging coil 1720.
  • the 2-2 charging coil connection unit 1722 may extend from a coil line disposed inside the second wireless charging coil 1720.
  • the third wireless charging coil 1730 may include a 3-1 charging coil connector 1731 and a 3-2 charging coil connector 1732.
  • the 3-1 charging coil connection unit 1731 may extend from a coil line disposed outside the third wireless charging coil 1730.
  • the 3-2 charging coil connection unit 1732 may extend from a coil wire disposed inside the third wireless charging coil 1730.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • the wireless charging coil may extend in a direction of the cable access part 1620 disposed on one side of each shielding member 1600.
  • the 3171 charging coil connection unit 1731 and the 3-2 charging coil connection unit 1732 of the 2721 charging coil connection unit 1722 and the third wireless charging coil 1730 are respectively shielded materials 1600.
  • a part of the first to third charging coil connection parts 1711 to 1732 is disposed in the recess formed by the cable access part 1620 so that the soldering process with the connection pins P1 to P24 is performed. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface 1400a of the substrate 1400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as illustrated in FIG. 22, when there are a plurality of wireless charging coils, the wireless charging coils 1720, the first wireless charging coils 1710, and the third wireless charging coils 1730 may be arranged in this order.
  • the second-second charging coil connection unit 1722 of the second wireless charging coil 1720 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 721 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection unit 1712 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 711 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the third-second charging coil connection unit 1732 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 charging coil connection unit 1731 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection units 1711, 172, 1721, 1722, 1731, and 1732 connected to the connection pins P may be disposed at a predetermined distance from the substrate 1400 when they are connected between the connection pins.
  • each of the charging coil connection parts 1711, 172, 1721, 1722, 1731, and 1732 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pins. .
  • the soldering jig is used to solder the charging coil connection part and the connection pin, and the soldering jig is removed.
  • the charging coil connection part is floated from the substrate 1400 at a predetermined interval to be soldered.
  • the wireless charging device constitutes a shielding material.
  • the wireless communication coil in a spiral manner on the upper surface of the shielding material, it can have an effective characteristic according to the reduction in the directional resistance and the improvement of the recognition rate.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • Figure 23 is an exploded perspective view of a wireless charging device according to another embodiment
  • Figure 24 is a perspective view of a wireless charging device according to another embodiment
  • Figure 25 is A-A 'of the wireless charging device shown in FIG. Therefore, it is a side view showing a cut section
  • Figure 26 is a side view showing a cut along the line B-B 'of the wireless charging device shown in Figure 24
  • Figure 27 is a view of the wireless charging device shown in Figure 24 It is a side view which shows the cross section cut along C-C '.
  • a wireless charging device includes a heat dissipation sheet 1300, a substrate 1400, a first shielding material 1900, a wireless communication coil 1500, a second shielding material 1600, and The wireless charging coil module 1700 may be included.
  • the heat dissipation sheet 1300 is heat transferred to the outside of the wireless charging device when heat generated from the wireless charging coil module 1700 is directly transmitted through the shielding materials 1600 and 1900 or transmitted through the heat dissipation holes of the shielding materials 1600 and 1900. Can be released.
  • the heat dissipation sheet 1300 may be made of a material having high thermal conductivity or high thermal emissivity. For example, it may include aluminum. However, the present invention is not limited thereto and may include various heat dissipating materials.
  • the heat dissipation sheet 1300 may support the shielding materials 1600 and 1900, the wireless communication coil 1500, and the wireless charging coil module 1700.
  • An area of the heat dissipation sheet 1300 may be larger than an area of the first shielding material 1900 disposed at an upper portion thereof.
  • the heat dissipation sheet 1300 may include a first hole h1, a second hole h2, a third hole h3, and a fourth hole h4.
  • the first to fourth holes h1 to h4 formed in the heat dissipation sheet 1300 may be connected to other substrates (not shown) or the case (not shown) by a fastening member (not shown).
  • the heat dissipation sheet 1300 may form an accommodating groove 1310 so that the substrate 1400 is disposed at one side. Specifically, one side of the heat dissipation sheet 1300 is formed in the receiving groove from the outside to the inside, the receiving groove 1310 may correspond to the size, shape, position that can accommodate the substrate 1400.
  • the substrate 1400 accommodated in the accommodation groove 1310 formed in the heat dissipation sheet 1300 may be rigid.
  • the substrate 1400 may include a plurality of pin holes (Ph).
  • Connection pins P1 to P24 are inserted into the pin holes Ph so as to extend from the top surface 1400a of the substrate 400 to the bottom surface 1400b.
  • Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • a lower surface of the substrate 1400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • PS connection pin supporter
  • the connection pin supporter Ps may allow the plurality of connection pins to be firmly lowered to the substrate 1400 and protect the plurality of connection pins P1 to P24.
  • connection pin supporter PS may be disposed on the bottom surface of the substrate 1400 corresponding to the plurality of connection pins P1 to P24.
  • the area of the connection pin supporter PS may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 1400 may include one or more temperature sensors 1800: 1810, 1820, 1830.
  • One or more temperature sensors may be disposed on the top surface 1400a of the substrate 1400.
  • the plurality of temperature sensors 1800 may include first to third temperature sensors 1810, 1820, and 1830.
  • the first to third temperature sensors 1810, 1820, 1830 may be connected to and disposed in correspondence with the wireless charging coils 1710, 1720, 1730 of the wireless charging coil module 1700.
  • the first temperature sensor 1810 may be disposed on the upper surface 400a of the substrate to measure the temperature of one side of the first wireless charging coil 1710.
  • the second temperature sensor 1820 may be disposed on the upper surface 400a of the substrate to measure the temperature of one side of the second wireless charging coil 1720.
  • the third temperature sensor 1830 may be disposed on the upper surface 400a of the substrate to measure the temperature of one side of the third wireless charging coil 1730.
  • the first to third temperature sensors 1810, 1820, 1830 may include through holes 1900: 1911, 1912, and 1913 of the first shielding member 1900, and through holes 1610: 1611, of the second shielding member 1600, respectively. 1612 and 1613.
  • the first temperature sensor 910 is disposed on the upper surface 1400a of the substrate to correspond to the first through hole 1911 of the first shielding material 1900 and the first through hole 1611 of the second shielding material 1500. Can be.
  • the second temperature sensor 1820 may be disposed on the upper surface 1400a of the substrate to correspond to the second through hole 1912 of the first shielding material 1900 and the second through hole 1612 of the second shielding material 1600. have.
  • the third temperature sensor 1830 may be disposed on the upper surface 1400a of the substrate in correspondence with the second through hole 1913 of the first shielding material 1900 and the third through hole 1613 of the second shielding material 1600. .
  • one or more temperature sensors 1800: 1810, 1820, 1830 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 1700.
  • one or more temperature sensors 1800: 1810, 1820, 1830 are disposed under a separate substrate (not shown), and have an advantage of measuring temperature adjacent to the wireless charging coil module 1700.
  • each of the temperature sensors 1810, 1820, and 1830 may be connected to a connection pin P formed on the substrate 1400.
  • the connection part (not shown) extending from the first temperature sensor 1810 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 1820 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 1830 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 1810, 1820, and 1830 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the first shielding material 1900 may be disposed on the heat dissipation sheet 1300.
  • the first shielding material 1900 and the heat dissipation sheet 1300 may be fixed by disposing an adhesive or an adhesive member (not shown).
  • the first shielding material 1900 may include through holes 1900: 1911, 1912, and 1913 at positions and sizes corresponding to the temperature sensors 1800 disposed on the substrate 1400.
  • the first shielding material 1900 supports the second shielding material 1600 disposed on the first shielding material 1900 and performs a function for improving performance of the wireless communication coil 1900 and the wireless charging coil module 1700. can do. That is, the upper surface of the first shielding material 1900 may support the wireless communication coil 1900 formed to surround the side of the second shielding material 1600 and perform a function for improving performance.
  • the wireless communication coil 1500 may be disposed to be wound a plurality of times horizontally to surround the side surface of the second shielding material 1600 in a spiral form.
  • Spiral form refers to the winding while overlapping in the horizontal (horizontal) direction. That is, it refers to a wireless communication coil formed by winding a plurality of horizontally.
  • the wireless communication coil 1500 may be formed of a cotton yarn, a Litz wire, an enameled copper wire, or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • the wireless communication coil 1500 may be bonded and fixed by the first shielding member 1900 and the second shielding member 1600 with an adhesive or an adhesive member (not shown).
  • the wireless communication coil 1500 extends from one side of the second shielding member 1600 to surround the side of the second shielding member 1600 on the upper surface of the first shielding member 1900 to cover all sides of the second shielding member 1600. It may be formed to be wound to wrap.
  • the wireless communication coil 1500 has a thickness T3 of the threshold.
  • the thickness of the wireless communication coil 500 may be 0.5 mm.
  • a wireless communication coil, which is wound on the upper surface of the first shielding material 1900 to contact the side surface of the second shielding material 1600 and surrounds the second shielding material 1600, is wound three times. do. Accordingly, the width T4 of the wireless communication coil wound in a spiral shape on the plane of the first shielding material 1900 may be 1.5 mm.
  • the thickness and the number of turns of the wireless communication coil as described above is not limited, and may be configured in various sizes and widths according to the embodiment.
  • the wireless communication coil 1500 may have the separation distances T5 ′ and T5 ′ from the outside to the inside of the shielding material 1600.
  • the separation distances T1 ′ and T2 ′ may be spaced at least two times or more than the thickness of the wireless communication coil 500. Therefore, the wireless communication coil 1500 may be spaced at least 1 mm from the outside of the shielding material 1600.
  • the separation distance as described above is not limited, and may be implemented in various ranges according to wireless communication and wireless charging efficiency and performance.
  • One side and the other side of the wireless communication coil 1500 may be connected to the connection pin (P), respectively. Specifically, one side of the wireless communication coil 1500 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. Can be.
  • the second shielding member 1600 is disposed on the first shielding member 1900 and the substrate 1400 and supports the wireless charging coil module 1700.
  • the first shielding member 1900 may be disposed below the second shielding member 1600, and the wireless charging coil module 1700 may be disposed above the second shielding member 1600.
  • the first shielding member 1900, the substrate 1400, and the wireless charging coil module 1700 may be fixed to the upper and lower portions of the second shielding member 1600 by an adhesive or an adhesive member, respectively.
  • the second shielding material 1600 may be disposed on a lower surface of the wireless charging coil module 1700 to support the wireless charging coil module 1700.
  • the second shielding member 1600 may be disposed on the bottom surfaces of the second wireless charging coil 1720 and the third wireless charging coil 1730. have.
  • An adhesive or an adhesive member (not shown) is disposed between the upper surface of the second shielding member 1600 and the lower surface of the second wireless charging coil 1720 and the third wireless charging coil 1730 to form the second shielding member 1600 and the second.
  • the wireless charging coil 1720 and the third wireless charging coil 1730 may be fixed.
  • the second shielding member 1600 may guide the wireless power generated from the wireless charging coil module 1700 disposed above the charging direction, and protect various circuits disposed below from the electromagnetic field.
  • the second shielding material 1600 may include first to third through holes 1610: 1611, 1612, and 1613.
  • the second shielding member 1600 may be formed in a size and shape position corresponding to the temperature sensor 1800 disposed in the substrate 1400 of the first through third through holes 1611, 1612, and 1613, respectively.
  • the second shielding member 1600 may have a cable access portion 1620 having a recess structure.
  • the cable access part 1620 of the second shielding material 1620 may secure a space of the charging coil connection part when the charging coil connection part of the wireless charging coil is connected to the connection pin disposed on the substrate 1400.
  • the wireless charging coil module 1700 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto, and may be wound in different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include the first wireless charging coil 1710 to the third wireless charging coil 1730.
  • the second wireless charging coil 1720 and the third wireless charging coil 1730 may be disposed on the first layer disposed on the same layer.
  • the first wireless charging coil 1710 may be disposed on the second layer and disposed on the second wireless charging coil 1720 and the third wireless charging coil 1730.
  • the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power.
  • the distance between the wireless communication coil 1500 and the wireless charging coil module 1700 may be based on the second wireless charging coil 1720 and the third wireless charging coil 1730 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wires or cables coated with a sheath.
  • the first wireless charging coil 1710 may include a first-first charging coil connection unit 1711 and a second-second charging coil connection unit 712.
  • the first-first charging coil connection unit 1711 may extend to a coil wire disposed outside the first wireless charging coil 1710.
  • the 1-2 charging coil connection unit 1712 may extend from a coil line disposed inside the first wireless charging coil 1710.
  • the second wireless charging coil 1720 may include a 2-1 charging coil connector 1721 and a 2-2 charging coil connector 1722.
  • the 2-1 charging coil connection unit 721 may extend from a coil line disposed outside the second wireless charging coil 1720.
  • the second-second charging coil connection unit 722 may extend from a coil line disposed inside the second wireless charging coil 1720.
  • the third wireless charging coil 1730 may include a 3-1 charging coil connector 1731 and a 3-2 charging coil connector 1732.
  • the 3-1 charging coil connection unit 731 may extend from a coil line disposed outside the third wireless charging coil 1730.
  • the 3-2 charging coil connection unit 1732 may extend from a coil wire disposed inside the third wireless charging coil 1730.
  • a part of the first to third charging coil connection parts 1711 to 1732 is disposed in the recess formed by the cable access part 1620 so that the soldering process with the connection pins P1 to P24 is performed. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • the wireless charging coil may extend in a direction of the cable access part 1620 disposed on one side of each shielding member 1600.
  • the 3171 charging coil connection unit 1731 and the 3-2 charging coil connection unit 1732 of the 2721 charging coil connection unit 1722 and the third wireless charging coil 1730 may respectively be shielded material 1600. It may be disposed extending in the direction of the cable access (1620) disposed on one side of the.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface 1400a of the substrate 1400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as illustrated in FIG. 8, when there are a plurality of wireless charging coils, the second wireless charging coil 720, the first wireless charging coil 1710, and the third wireless charging coil 1730 may be arranged in this order.
  • the second-second charging coil connection unit 1722 of the second wireless charging coil 1720 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection unit 1721 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection unit 1712 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection unit 1711 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the third-second charging coil connection unit 1732 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 charging coil connection unit 1731 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection units 1711, 1712, 1721, 1722, 1731, and 1732 connected to the connection pins P may be disposed at positions spaced apart from the substrate 400 by a predetermined distance when connected between the connection pins.
  • each of the charging coil connection parts 1711, 1712, 1721, 1722, 1731, and 1732 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pins. .
  • the soldering jig is used to solder the charging coil connection part and the connection pin, and the soldering jig is removed.
  • the charging coil connection part is floated from the substrate 1400 at a predetermined interval to be soldered.
  • the wireless charging device comprises a first shielding material for the wireless communication coil and a second shielding material for the wireless charging coil.
  • a first shielding material for the wireless communication coil for the wireless communication coil
  • a second shielding material for the wireless charging coil for the wireless charging coil.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • FIG. 28 is an exploded perspective view of a wireless charging device according to another embodiment
  • FIG. 29 is a perspective view of a wireless charging device according to another embodiment
  • FIG. 30 is A-A 'of the wireless charging device shown in FIG. Therefore, it is a side view showing a cut section
  • Figure 31 is a side view showing a cut along the line B-B 'of the wireless charging device shown in Figure 29
  • Figure 32 is a C- of the wireless charging device shown in Figure 29 It is a side view which shows the cross section cut along C '.
  • a wireless charging device may include a heat dissipation sheet 1300, a substrate 1400, a first shielding material 1900, a wireless communication coil 1500, and a second shielding material 1600. And a wireless charging coil module 1700.
  • the heat dissipation sheet 1300 is directly transferred through the shielding materials 1600 and 1900 through the heat generated from the wireless charging coil module 700 or through the heat dissipation holes of the shielding materials 1600 and 1900. Can be released.
  • the heat dissipation sheet 1300 may be made of a material having high thermal conductivity or high thermal emissivity. For example, it may include aluminum. However, the present invention is not limited thereto and may include various heat dissipating materials.
  • the heat dissipation sheet 1300 may support the shielding materials 1600 and 1900, the wireless communication coil 1500, and the wireless charging coil module 1700.
  • An area of the heat dissipation sheet 1300 may be larger than an area of the first shielding material 1900 disposed at an upper portion thereof.
  • the heat dissipation sheet 1300 may include a first hole h1, a second hole h2, a third hole h3, and a fourth hole h4.
  • the first to fourth holes h1 to h4 formed in the heat dissipation sheet 1300 may be connected to other substrates (not shown) or the case (not shown) by a fastening member (not shown).
  • the heat dissipation sheet 1300 may form an accommodating groove 1310 so that the substrate 1400 is disposed at one side. Specifically, one side of the heat dissipation sheet 1300 is formed in the receiving groove from the outside to the inside, the receiving groove 1310 may correspond to the size, shape, position that can accommodate the substrate 1400.
  • the substrate 1400 accommodated in the accommodation groove 1310 formed in the heat dissipation sheet 1300 may be rigid.
  • the substrate 1400 may include a plurality of pin holes (Ph).
  • Connection pins P1 to P24 are inserted into each pin hole Ph so as to extend from the upper surface 1400a of the substrate 1400 to the lower surface 1400b.
  • Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • a lower surface of the substrate 1400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • PS connection pin supporter
  • the connection pin supporter Ps may allow the plurality of connection pins to be firmly fixed to the substrate 1400, and protect the plurality of connection pins P1 to P24.
  • connection pin supporter PS may be disposed on the bottom surface of the substrate 1400 corresponding to the plurality of connection pins P1 to P24.
  • the area of the connection pin supporter PS may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 1400 may include one or more temperature sensors 1800: 1810, 1820, and 1830.
  • One or more temperature sensors may be disposed on the top surface 1400a of the substrate 1400.
  • the plurality of temperature sensors 1800 may include first to third temperature sensors 1810, 1820, and 1830.
  • the first to third temperature sensors 1810, 1820, and 1830 may be connected to and correspond to the wireless charging coils 1710 1720 and 1730 of the wireless charging coil module 1700.
  • the first temperature sensor 1810 may be disposed on the upper surface 1400a of the substrate to be connected to one side of the first wireless charging coil 1710.
  • the second temperature sensor 1820 may be disposed on the upper surface 1400a of the substrate to be connected to one side of the second wireless charging coil 1720.
  • the third temperature sensor 1830 may be disposed on the upper surface 1400a of the substrate to be connected to one side of the third wireless charging coil 1730.
  • the first to third temperature sensors 1810, 1820, and 1830 may respectively include through holes 1910: 1911, 1912, and 1913 of the first shielding member 1900, and through holes 1610: 1611, of the second shielding member 1600. 1612, 1613.
  • the first temperature sensor 1810 is disposed on the upper surface 1400a of the substrate to correspond to the first through hole 1911 of the first shielding material 1900 and the first through hole 1611 of the second shielding material 1500. Can be.
  • the second temperature sensor 1820 may be disposed on the upper surface 1400a of the substrate to correspond to the second through hole 1912 of the first shielding material 1900 and the second through hole 1612 of the second shielding material 1600. have.
  • the third temperature sensor 1830 may be disposed on the upper surface 1400a of the substrate in correspondence with the second through hole 1913 of the first shielding material 1900 and the third through hole 1613 of the second shielding material 1600. .
  • one or more temperature sensors 1800: 1810, 1820, and 1830 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 700.
  • one or more temperature sensors 1800: 1810, 1820, and 1830 may be disposed under a separate substrate (not shown), and thus, may measure the temperature adjacent to the wireless charging coil module 700.
  • each of the temperature sensors 1810, 1820, and 1830 may be connected to a connection pin P formed on the substrate 1400.
  • the connection part (not shown) extending from the first temperature sensor 1810 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 1820 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 1830 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 1810, 1820, and 1830 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the first shielding material 1900 may be disposed on the heat dissipation sheet 300.
  • An adhesive or an adhesive member (not shown) may be disposed and fixed to the first shielding member 1900 and the heat dissipation sheet 1300.
  • the first shielding material 1900 may include through holes 1910: 1911, 1912, and 1913 at positions and sizes corresponding to the temperature sensors 1800 disposed on the substrate 1400.
  • the first shielding material 2900 supports the second shielding material 1600 disposed on the first shielding material 2900 and performs a function for improving performance of the wireless communication coil 2900 and the wireless charging coil module 1700. can do. That is, the upper surface of the first shielding material 1900 may support the wireless communication coil 1900 formed to surround the side of the second shielding material 1600 and perform a function for improving performance.
  • the first shielding member 1900 may be formed larger than the size of the second shielding member 1600.
  • the first shielding member 1900 may be formed to such an extent that all four directions may protrude to twice or more than the thickness of the wireless communication coil wound to the outside of the second shielding member 1600.
  • the first shielding material 1900 may be configured to include a bottom portion 1901 and a shielding wall 1902.
  • the first shielding member 1900 may include a bottom portion 901 adhered to the second shielding member 1600 and a shielding wall 1902 formed to surround the outer region of the first shielding member 1900.
  • the shielding wall 1902 may form an open area 1920 on one side.
  • the open area may be formed in a direction and a space in which each coil connection portion of the wireless charging coil may be drawn out.
  • the open area 1920 is not an essential configuration, the open area is not formed, and the shielding wall 1902 may be formed in a closed loop shape.
  • connection part through hole may be formed to correspond to the wireless charging coil connection part to penetrate the coil connection part of the wireless charging coil.
  • the shielding wall 1902 may be formed up to the height of the second shielding material 1600. Specifically, referring to FIGS. 29 and 30, the height T8 of the shielding wall 1902 may extend to the height T7 of the second shielding material 1600.
  • the wireless communication coil 1500 may be disposed to be wound a plurality of times horizontally to surround the side surface of the second shielding material 600 in a spiral form.
  • Spiral form refers to the winding while overlapping in the horizontal (horizontal) direction. That is, it refers to a wireless communication coil formed by winding a plurality of horizontally.
  • the wireless communication coil 1500 may be formed of a cotton yarn, a Litz wire, an enameled copper wire, or the like.
  • the wireless communication coil according to the embodiment has a feature that is thin in thickness, excellent in fairness and reliability, compared to a wireless communication coil pattern printed on a PCB substrate.
  • the wireless communication coil 1500 may be bonded and fixed by the first shielding member 1900 and the second shielding member 1600 with an adhesive or an adhesive member (not shown).
  • the wireless communication coil 500 extends from one side of the second shielding member 1600 so as to surround the side of the second shielding member 1600 on the upper surface of the first shielding member 1900 to cover all sides of the second shielding member 600. It may be formed to be wound to wrap.
  • the wireless communication coil 1 500 has a thickness T3 of the threshold.
  • the thickness of the wireless communication coil 1500 may be 0.5 mm.
  • a wireless communication coil, which is wound on the upper surface of the first shielding material 1900 to contact the side surface of the second shielding material 1600 and surrounds the second shielding material 1600, is wound three times. do. Accordingly, the width T4 of the wireless communication coil wound in a spiral shape on the plane of the first shielding material 1900 may be 1.5 mm.
  • the thickness and the number of turns of the wireless communication coil as described above is not limited, and may be configured in various sizes and widths according to the embodiment.
  • the shielding wall 1902 may be spaced apart by a threshold distance T6 from the wireless communication coil 1530 in which the wireless communication coil 1500 is wound and turned three times.
  • the threshold distance T6 of the wireless communication coil 1530 and the shielding wall 1902 may be disposed two times or more than the thickness T3 of the wireless communication coil 530. T6) may be configured to 1 mm or more.
  • the threshold distance is not limited and may vary according to the thickness or performance and effect of the wireless communication coil.
  • One side and the other side of the wireless communication coil 1500 may be connected to the connection pin (P), respectively. Specifically, one side of the wireless communication coil 1500 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. Can be.
  • the second shielding member 1600 is disposed on the first shielding member 1900 and the substrate 1400 and supports the wireless charging coil module 1700.
  • the first shielding member 1900 may be disposed below the second shielding member 1600, and the wireless charging coil module 1700 may be disposed above the second shielding member 1600.
  • the first shielding member 1900, the substrate 1400, and the wireless charging coil module 1700 may be fixed to the upper and lower portions of the second shielding member 1600 by an adhesive or an adhesive member, respectively.
  • the second shielding material 1600 may be disposed on a lower surface of the wireless charging coil module 1700 to support the wireless charging coil module 1700.
  • the second shielding member 1600 may be disposed on the bottom surfaces of the second wireless charging coil 1720 and the third wireless charging coil 1730. have.
  • An adhesive or an adhesive member (not shown) is disposed between the upper surface of the second shielding member 1600 and the lower surface of the second wireless charging coil 1720 and the third wireless charging coil 1730 to form the second shielding member 1600 and the second.
  • the wireless charging coil 1720 and the third wireless charging coil 1730 may be fixed.
  • the second shielding member 1600 may guide the wireless power generated from the wireless charging coil module 1700 disposed above the charging direction, and protect various circuits disposed below from the electromagnetic field.
  • the second shielding material 1600 may include first to third through holes 1610: 1611, 1620, and 1630.
  • the second shielding member 1600 may be formed in a size and shape position corresponding to the temperature sensor 1800 disposed in the substrate 1400 of the first through third through holes 1611, 1612, and 1613, respectively.
  • the cable shield 620 may be formed in the second shielding material 1600.
  • the cable access part 1620 of the second shielding material 1620 may secure a space of the charging coil connection part when the charging coil connection part of the wireless charging coil is connected to the connection pin disposed on the substrate 400.
  • the wireless charging coil module 1700 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto, and may be wound in different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include the first wireless charging coil 1710 to the third wireless charging coil 1730.
  • the second wireless charging coil 720 and the third wireless charging coil 1730 may be disposed on the first layer disposed on the same layer.
  • the first wireless charging coil 1710 may be disposed on the second layer and disposed on the second wireless charging coil 1720 and the third wireless charging coil 1730. Accordingly, the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power.
  • the distance between the wireless communication coil 1500 and the wireless charging coil module 1700 may be based on the second wireless charging coil 1720 and the third wireless charging coil 1730 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wires or cables coated with a sheath.
  • the first wireless charging coil 1710 may include a 1-1 charging coil connection unit 1711 and a 1-2 charging coil connection unit 1712.
  • the first-first charging coil connection unit 1711 may extend to a coil wire disposed outside the first wireless charging coil 1710.
  • the 1-2 charging coil connection unit 1712 may extend from a coil line disposed inside the first wireless charging coil 1710.
  • the second wireless charging coil 1720 may include a 2-1 charging coil connector 1721 and a 2-2 charging coil connector 722.
  • the 2-1 charging coil connection unit 1721 may extend from a coil line disposed outside the second wireless charging coil 1720.
  • the 2-2 charging coil connection unit 1722 may extend from a coil line disposed inside the second wireless charging coil 1720.
  • the third wireless charging coil 1730 may include a 3-1 charging coil connector 1731 and a 3-2 charging coil connector 1732.
  • the 3-1 charging coil connection unit 1731 may extend from a coil line disposed outside the third wireless charging coil 1730.
  • the 3-2 charging coil connection unit 1732 may extend from a coil wire disposed inside the third wireless charging coil 1730.
  • a part of the first to third charging coil connection parts 1711 to 1732 is disposed in the recess formed by the cable access part 1620 so that the soldering process with the connection pins P1 to P24 is performed. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • the wireless charging coil may extend in the direction of the cable entry / exit 620 disposed on one side of each shielding member 1600.
  • the 3171 charging coil connection unit 1731 and the 3-2 charging coil connection unit 1732 of the 2721 charging coil connection unit 1722 and the third wireless charging coil 1730 may respectively be shielded material 1600. It may be disposed extending in the direction of the cable access (1620) disposed on one side of the.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface 1400a of the substrate 1400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as illustrated in FIG. 22, when there are a plurality of wireless charging coils, the wireless charging coils 1720, the first wireless charging coils 1710, and the third wireless charging coils 1730 may be arranged in this order.
  • the second-second charging coil connection unit 1722 of the second wireless charging coil 1720 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 721 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection unit 1712 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection unit 1711 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the third-second charging coil connection unit 1732 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 charging coil connection unit 1731 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection units 1711, 1712, 1721, 1722, 1731, and 1732 connected to the connection pins P may be disposed at positions spaced apart from the substrate 1400 by a predetermined distance when connected between the connection pins.
  • each of the charging coil connection parts 1711, 1712, 1721, 1722, 1731, and 1732 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pins. .
  • the soldering jig is used to solder the charging coil connection part and the connection pin, and the soldering jig is removed.
  • the charging coil connection part is floated from the substrate 1400 at a predetermined interval to be soldered.
  • the wireless charging device comprises a first shielding material for the wireless communication coil and a second shielding material for the wireless charging coil.
  • a shielding wall on the first shielding material, and by winding the wireless communication coil in a spiral form on the second shielding material, it can have an effective characteristic according to the lowering of the directional resistance and improved recognition rate.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • Table 2 below shows the electrical characteristics of the improved wireless charging device according to the embodiments.
  • the inductance increases and the resistance decreases according to the structural characteristics of the wireless communication coil and the structural characteristics of the shielding material according to the present embodiment. Also. As the vertical recognition distance is improved, the electrical performance may be improved as compared with a wireless communication coil configured in a printed pattern form on a conventional substrate.
  • FIG. 33 is an exploded perspective view of a wireless charging device according to another embodiment
  • FIG. 34 is a perspective view of the wireless charging device shown in FIG. 33
  • FIG. 35 shows A-A ′ of the wireless charging device shown in FIG. 34
  • 36 is a cross-sectional view taken along line B-B 'of the wireless charging device shown in FIG. 34
  • FIG. 37 is a side view showing C-C' of the wireless charging device shown in FIG.
  • a wireless charging device may include a shielding material 2300, a substrate 2400, a wireless communication coil 2500, and a wireless charging coil module 2600.
  • the substrate 400 supports the shielding material 2300, the wireless communication coil 2500, and the wireless charging coil module 2600.
  • the substrate 2400 may be disposed on one bottom surface of the shielding material 2300. That is, the area of the substrate 2400 may be smaller than the area of the shielding material 2300.
  • An adhesive or an adhesive member (not shown) may be formed on the lower surfaces of the substrate 2400 and the shielding material 2300 to attach and fix the substrate 2400 and the shielding material 2300.
  • the substrate 2400 may include a plurality of pin holes (Ph). Connection pins P1 to P24 are inserted into each pin hole Ph so as to extend from an upper surface to a lower surface of the substrate 400. Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • a lower surface of the substrate 2400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • the connection pin supporter PS may allow the plurality of connection pins to be firmly fixed to the substrate 400, and protect the plurality of connection pins P1 to P24.
  • the connection pin supporter PS may be disposed on the bottom surface of the substrate 400 corresponding to the plurality of connection pins P1 to P24. In addition, the area of the connection pin supporter PS may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 2400 may include one or more temperature sensors 2700: 2710, 2720, and 2730.
  • One or more temperature sensors 2700 may be disposed on an upper surface of the substrate 2400.
  • the plurality of temperature sensors 2700 may include first to third temperature sensors 2710, 2720, and 2730.
  • the first to third temperature sensors 2710, 2720, and 2730 may be connected to and correspond to the wireless charging coils 2610, 2620, and 2630 of the wireless charging coil module 2600.
  • the first temperature sensor 2710 may be disposed on an upper surface of the substrate 2400 to measure the temperature of one side of the first wireless charging coil 2610.
  • the second temperature sensor 2720 may be disposed on an upper surface of the substrate 2400 to measure a temperature of one side of the second wireless charging coil 2620.
  • the third temperature sensor 2730 may be disposed on the upper surface of the substrate 2400 to measure the temperature of one side of the third wireless charging coil 2630.
  • the first to third temperature sensors 2710, 2720, and 2730 may be disposed corresponding to the through holes 2310: 2311, 2312, and 2313 of the shielding material 300.
  • the first temperature sensor 710 may be disposed on the upper surface of the substrate 2400 to correspond to the first through hole 2311 of the shielding material 2300.
  • the second temperature sensor 720 may be disposed on the upper surface of the substrate 2400 to correspond to the second through hole 2312 of the shielding material 2300.
  • the third temperature sensor 2730 may be disposed on the upper surface of the substrate 2400 to correspond to the third through hole 2313 of the shielding material 2300.
  • one or more temperature sensors 2700: 2710, 2720, and 2730 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 2600.
  • the one or more temperature sensors 2700: 2710, 2720, and 2730 may be disposed under a separate substrate (not shown), and thus, may measure the temperature adjacent to the wireless charging coil module 2600.
  • each of the temperature sensors 2710, 2720, and 2730 may be connected to a connection pin P formed on the substrate 2400.
  • the connection part (not shown) extending from the first temperature sensor 2710 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 2720 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 2730 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 2710, 2720, and 2730 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the shielding material 2300 may be disposed on the substrate 2400.
  • the shielding material 2300 may support the wireless communication coil 2500 and the wireless charging coil module 2600 and perform a function for improving the performance of the wireless communication coil 2500 and the wireless charging coil module 2600.
  • the shielding material 2300 may guide the wireless power generated in the wireless charging coil module 2600 in the charging direction, and may protect various circuits disposed below from the electromagnetic field.
  • the area of the shielding material 2300 may be larger than that of the wireless communication coil 500 disposed thereon.
  • the shielding member 2300 may have a cable entry part 2320 having a recess structure.
  • the cable access part 2320 of the shielding material 2300 may secure a space of the charging coil connection part when connecting the connection pin P of the wireless charging coil connection part of the wireless charging coil to the substrate 2400.
  • cable entry 2320 is not a required component.
  • the cable entry part 2320 may not be formed in the shielding material 2300.
  • the shielding material 2300 may include through holes 2310: 2311, 2312, and 2313 having sizes, shapes, and positions corresponding to the temperature sensors 2700 disposed on the substrate 2400.
  • the wireless charging coil module 2600 may be disposed on the shielding material 2300, and the wireless communication coil 2500 may be wound to be spaced apart from the wireless charging coil module 2600 to surround the wireless charging coil module 2600. have.
  • the size of the shielding material 2300 may be formed to such a size that the four directions may protrude to twice or more than the thickness of the wireless communication coil 2500 wound in a plane on the shielding material 2300.
  • the shielding material 2300 may have a permeability in a range suitable for a wireless communication coil but not affecting wireless charging.
  • a high permeability shielding material should be used in the case of a wireless charging coil, and a high permeability shielding material should be used in the case of a wireless communication coil and a low permeability shielding material should be used.
  • the permeability of the shielding material according to the present embodiment may have a range of 800 ⁇ W 10%. That is, in the case of the shielding material 2300 supporting the wireless communication coil and the wireless charging coil according to the present embodiment can be configured to have a magnetic permeability of 720 ⁇ to 880 ⁇ .
  • the wireless communication coil 500 may be disposed to be wound a plurality of times horizontally in an outer region of the shielding material 2300 in a spiral form on a plane of the shielding material 2300.
  • Spiral form refers to the winding while overlapping in the horizontal (horizontal) direction. That is, it refers to a wireless communication coil formed by winding a plurality of horizontally.
  • the wireless communication coil 2500 may be formed of a cotton yarn, a Litz wire, an enameled copper wire, or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • the shielding material 2300 since it is formed on the shielding material 2300 to be located at the side of the wireless charging coil, a separate PCB substrate is not required, so that the overall thickness of the wireless charging device can be reduced.
  • the recognition rate can be improved because the resistance is lower than the coil pattern, and the cost is low, which can reduce the material cost.
  • the wireless communication coil 2500 may be attached and fixed to the top surface of the shielding material 2300 by an adhesive or an adhesive member (not shown).
  • An adhesive or an adhesive member (not shown) for attaching and fixing the wireless communication coil 2500 to the upper surface of the shielding material 2300 may be formed in a region where the wireless communication coil 2500 and the shielding material 2300 contact each other.
  • the wireless communication coil 2500 and the shielding material 2300 may be formed in a part of an area in contact with each other.
  • an adhesive or an adhesive member may be applied to a portion of the area where the wireless communication coil 2500 is wound and bent or a portion of the area where the wireless communication coil 2500 is horizontally wound, among the areas where the wireless communication coil 2500 and the shielding material 2300 are in contact with each other. Can be formed.
  • the configuration is not limited, and various adhesives or adhesive members may be formed in areas or locations for elaborate fixing of the wireless communication coil 2500 and the shielding material 2300.
  • the wireless communication coil 2500 has threshold thicknesses T1_1, T1_2, T1_3.
  • the thickness T1_1 of the wireless communication coil 2500 may be 0.5 mm.
  • a wireless communication coil which is spaced apart from the wireless charging coil module 2600 on the upper surface of the shielding material 2300 and wound around the wireless charging coil module 2600, is wound three times.
  • the width T1 of the wireless communication coil wound in a spiral shape on the plane of the shielding material 2300 may be 1.5 mm.
  • the thickness and the number of turns of the wireless communication coil as described above is not limited and may be configured in various sizes and widths according to the embodiment.
  • the wireless communication coil 2500 may be spaced apart from the wireless charging coil module 2600 by a threshold distance. That is, the wireless communication coil 2500 may be spaced apart from the wireless charging coil module by a distance T3 as shown in FIG. 6.
  • the separation distance T3 may be disposed two times or more than a thickness of the wireless communication coil 2500 to prevent leakage current. Therefore, the separation distance between the wireless charging coil module 2600 and the wireless communication coil 2500 may be preferably 1 mm or more. More preferably, the separation distance T3 of the wireless charging coil module 2600 and the wireless communication coil 2500 may be 1.5 mm or more.
  • the wireless communication coil 2500 may have a separation distance T4 from the outside to the inside of the shielding material 2300.
  • the separation distance T4 may be disposed two or more times or more than a thickness of the wireless communication coil 2500. Therefore, the wireless communication coil 2500 may be spaced apart by at least 1 mm from the outside of the shielding material 2300. More preferably, the distance T4 spaced apart from the outside of the wireless communication coil 2500 and the shielding material 2300 may be 1.5 mm or more.
  • One side and the other side of the wireless communication coil 2500 may be connected to the connection pin (P), respectively.
  • one side of the wireless communication coil 2500 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. Can be.
  • the wireless charging coil module 2600 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto and may be wound around different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto, and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include first wireless charging coil 2610 to third wireless charging coil 2630. The second wireless charging coil 2620 and the third wireless charging coil 2630 may be disposed on the first layer disposed on the same layer. The first wireless charging coil 2610 may be disposed on the second layer and disposed on the second wireless charging coil 2620 and the third wireless charging coil 2630. Accordingly, the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power. In addition, the distance between the wireless communication coil 2500 and the wireless charging coil module 2600 may be based on the second wireless charging coil 2620 and the third wireless charging coil 2630 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wires or cables coated with a sheath.
  • the first wireless charging coil 610 may include a first-first charging coil connection 2611 and a second-second charging coil connection 2612.
  • the first-first charging coil connection unit 2611 may extend to a coil wire disposed outside the first wireless charging coil 2610.
  • the 1-2 charging coil connection part 2612 may extend from a coil line disposed inside the first wireless charging coil 2610.
  • the second wireless charging coil 2620 may include a 2-1 charging coil connector 2621 and a 2-2 charging coil connector 2622.
  • the 2-1 charging coil connection unit 2621 may extend from a coil line disposed outside the second wireless charging coil 2620.
  • the 2-2 charging coil connecting unit 2622 may extend from a coil line disposed inside the second wireless charging coil 2620.
  • the third wireless charging coil 2630 may include a 3-1 charging coil connector 2632 and a 3-2 charging coil connector 2632.
  • the 3-1 charging coil connection 2263 may extend from a coil line disposed outside the third wireless charging coil 2630.
  • the 3-2 charging coil connection unit 2632 may extend from a coil wire disposed inside the third wireless charging coil 2630.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • each connection portion of the wireless charging coil may be disposed to extend in the direction of the cable access part 2320 disposed on one side of the shielding material 2300.
  • the 3221 charging coil connector 2263 and the 3-2 charging coil connector 2632 of the 2621 and the 2-2 charging coil connector 2622 and the third wireless charging coil 2630 are shielding materials 2300.
  • It may be disposed extending in the direction of the cable access portion 2320 disposed on one side of the.
  • soldering process with the connecting pins (P1 to P24) is performed so that a part of the first to third charging coil connection parts 611 to 632 is disposed inside the recess formed by the cable access part 2320. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface of the substrate 2400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as shown in FIG. 37, when there are a plurality of wireless charging coils, the second wireless charging coil 2620, the first wireless charging coil 2610, and the third wireless charging coil 2630 may be arranged in this order.
  • the second-second charging coil connection part 622 of the second wireless charging coil 2620 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 621 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection part 2612 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 2611 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the 3-2 charging coil connection part 2632 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 th charging coil connection part 2263 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection parts 2611, 2612, 2621, 2622, 2631, and 2632 connected to each connection pin P are spaced apart from the substrate 400 by a predetermined distance (T3_1, T3_2, T3_3, T3_4, T3_5, and T3_6).
  • each charging coil connection part 2611, 2612, 2621, 2622, 2631, and 2632 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pin. .
  • the soldering jig is used to solder the charging coil connection part and the connecting pin, and the soldering jig is removed. , T3_5, T3_6) to support the soldering.
  • the wireless charging device constitutes a single shielding material.
  • the wireless charging coil module and the wireless communication coil in a spiral manner on a single shielding material, directivity, resistance reduction, recognition rate improvement, and manufacturing cost can be reduced.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • FIG. 38 is an exploded perspective view of a wireless charging device according to another embodiment
  • FIG. 39 is a perspective view of the wireless charging device shown in FIG. 38
  • FIG. 40 shows A-A ′ of the wireless charging device shown in FIG. 39
  • 41 is a cross-sectional view taken along the line B-B 'of the wireless charging device shown in FIG. 39
  • FIG. 42 is a side view showing the C-C' of the wireless charging device shown in FIG.
  • a wireless charging device may include a shielding material 2300, a substrate 2400, a wireless communication coil 2500, and a wireless charging coil module 2600.
  • the substrate 2400 supports the shielding material 2300, the wireless communication coil 2500, and the wireless charging coil module 2600.
  • the substrate 2400 may be disposed on one bottom surface of the shielding material 2300. That is, the substrate 2400 may be formed smaller than the size of the shielding material 2300.
  • An adhesive or an adhesive member (not shown) may be formed on the lower surfaces of the substrate 2400 and the shielding material 2300 to attach and fix the substrate 2400 and the shielding material 2300.
  • the substrate 2400 may include a plurality of pin holes (Ph). Connection pins P1 to P24 are inserted into each pin hole Ph so as to extend from the top surface to the bottom surface of the substrate 2400. Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • the slope of the substrate 2400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • the connection pin supporter PS may be disposed on the bottom surface of the substrate 2400 in response to the plurality of connection pins P1 to P24.
  • the area of the connection pin supporter PS may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 2400 may include one or more temperature sensors 2700, 2710, 2720, and 2730.
  • One or more temperature sensors 2700 may be disposed on an upper surface of the substrate 2400.
  • the plurality of temperature sensors 2700 may include first to third temperature sensors 2710, 2720, and 2730.
  • the first to third temperature sensors 2710, 2720. 2730 may be connected to and correspond to the wireless charging coils 2610, 2620, and 2630 of the wireless charging coil module 600.
  • the first temperature sensor 2710 may be disposed on an upper surface of the substrate 2400 to measure the temperature of one side of the first wireless charging coil 2610.
  • the second temperature sensor 2720 may be disposed on an upper surface of the substrate 2400 to measure a temperature of one side of the second wireless charging coil 2620.
  • the third temperature sensor 2730 may be disposed on the upper surface of the substrate 2400 to measure the temperature of one side of the third wireless charging coil 2630.
  • the first to third temperature sensors 2710, 2720, and 2730 may be disposed corresponding to the through-holes 2310: 2311, 2312, and 2313 of the shielding material 2300.
  • the first temperature sensor 2710 may be disposed on the upper surface of the substrate 2400 to correspond to the first through hole 2311 of the shielding material 2300.
  • the second temperature sensor 2720 may be disposed on an upper surface of the substrate 2400 to correspond to the second through hole 2312 of the shielding material 2300.
  • the third temperature sensor 2730 may be disposed on the upper surface of the substrate 2400 to correspond to the third through hole 2313 of the shielding material 2300.
  • one or more temperature sensors 2700: 2710, 2720, and 2730 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 2600.
  • the one or more temperature sensors 2700: 2710, 2720, and 2730 may be disposed under a separate substrate (not shown), and thus, may measure the temperature adjacent to the wireless charging coil module 2600.
  • each of the temperature sensors 2710, 2720, and 2730 may be connected to a connection pin P formed on the substrate 2400.
  • the connection part (not shown) extending from the first temperature sensor 2710 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 2720 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 2730 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 2710, 2720, and 2730 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the shielding material 2300 may be disposed on the substrate 2400.
  • the shielding material 2300 may support the wireless communication coil 2500 and the wireless charging coil module 2600 and perform a function for improving the performance of the wireless communication coil 500 and the wireless charging coil module 2600.
  • the shielding material 2300 may guide the wireless power generated in the wireless charging coil module 2600 in the charging direction, and may protect various circuits disposed below from the electromagnetic field.
  • the area of the shielding material 2300 may be larger than that of the wireless communication coil 2500 disposed thereon.
  • the shielding member 2300 may have a cable entry part 2320 having a recess structure.
  • the cable access part 2320 of the shielding material 2300 may secure a space of the charging coil connection part when connecting the connection pin P of the wireless charging coil connection part of the wireless charging coil to the substrate 2400.
  • cable entry 2320 is not a required component.
  • the cable entry part 2320 may not be formed in the shielding material 2300.
  • the shielding material 2300 may include through-holes 2310: 2311, 2312, and 2313 having sizes, shapes, and positions corresponding to the temperature sensors 2700 disposed on the substrate 2400.
  • the wireless charging coil module 2600 may be disposed on the shielding material 2300, and the wireless communication coil 2500 may be wound to be spaced apart from the wireless charging coil module 2600 to surround the wireless charging coil module 2600.
  • the size of the shielding material 2300 may be formed to such a size that the four directions may protrude to twice or more than the thickness of the wireless communication coil 2500 wound in a plane on the shielding material 2300.
  • the shielding material 2 300 may include a bottom portion 2301 and a shielding wall 2302.
  • the shielding material 2300 may include a bottom portion 2301 to be bonded to the wireless communication coil 2500 and the wireless charging coil module 2600 and a shielding wall 2302 formed to surround the outer region of the shielding material 2300.
  • the bottom portion 2301 and the shielding wall 2302 of the shielding material 2300 may be integrally formed.
  • the bottom portion 2301 and the shielding wall 2302 may be formed in a separate configuration.
  • the shielding wall 2302 may be bonded and fixed by the bottom portion 301 and an adhesive or an adhesive member (not shown).
  • the shielding wall 2302 may include an open area 2320 on one side.
  • the open area 2320 may be formed in a direction and a space in which each coil connection portion of the wireless charging coil may be drawn out.
  • the open area is not an essential configuration and no open area is formed, and the shielding wall 2302 may be formed in a closed loop shape.
  • the bottom portion 2301 of the shielding material 2300 may form a connection part through hole (not shown).
  • the connection part through hole may be formed to correspond to the wireless charging coil connection part to penetrate the coil connection part of the wireless charging coil and the coil connection part of the wireless communication coil.
  • the shielding wall 2302 may be formed up to a height T2 of the wireless communication coil 2500.
  • the shielding wall 2302 may be formed to a part of the height of the wireless communication coil module 2600.
  • the height T6 of the shielding wall 2302 may be formed up to the height T2 of the wireless communication coil 2500 disposed on the bottom portion 2301 of the shielding material 2300.
  • the height may be greater than or equal to the height T2 of the wireless communication coil 500.
  • the wireless charging coil module 2600 may be formed to a height of about the height of the second wireless charging coil 2620 or the third wireless charging coil 2630 configured on the first floor.
  • the height of the shielding wall 2302 is not limited, and is formed at least as high as the height T2 of the wireless communication coil 2500 and preferably has a height for improving the performance of the wireless communication or wireless charging function.
  • the shielding material 2300 may have permeability within a range suitable for a wireless communication coil but not affecting wireless charging. Specifically, a high permeability shielding material should be used in the case of a wireless charging coil, and a high permeability shielding material should be used in the case of a wireless communication coil and a low permeability shielding material should be used. However, in this embodiment, a compromise value for each of the different permeability is required by implementing the wireless communication coil and the wireless charging coil on a single shield. As an example, the permeability of the shielding material according to the present embodiment may have a range of 800 ⁇ W 10%. That is, the shielding material 300 supporting the wireless communication coil and the wireless charging coil according to the present embodiment may be configured to have a magnetic permeability of 720 ⁇ to 880 ⁇ .
  • the shielding wall 2302 has been described as an example surrounding the outer region of the shielding material 2300.
  • a second shielding wall (not shown) may be added and configured.
  • an additional shielding wall (not shown) may be configured between the wireless communication coil 2500 and the wireless charging coil module 2600 to reduce interference between the wireless charging coil and the wireless communication coil.
  • the wireless communication coil 2500 may be disposed to be wound a plurality of times horizontally in an outer region of the shielding material 2300 in a spiral form on a plane of the shielding material 2300.
  • Spiral form refers to the winding while overlapping in the horizontal (horizontal) direction. That is, it refers to a wireless communication coil formed by winding a plurality of horizontally.
  • the wireless communication coil 500 may be formed of a cotton yarn, a Litz wire, an enameled copper wire, or the like.
  • the wireless communication coil according to the embodiment Pd has excellent features of fairness and reliability as compared to the wireless communication coil pattern printed on the PCB substrate.
  • the shielding material 2300 since it is formed on the shielding material 2300 to be located at the side of the wireless charging coil, a separate PCB substrate is not required, so that the overall thickness of the wireless charging device can be reduced.
  • the recognition rate can be improved because the resistance is lower than the coil pattern, and the cost is low, which can reduce the material cost.
  • the wireless communication coil 2500 may be attached and fixed to the top surface of the shielding material 2300 by an adhesive or an adhesive member (not shown).
  • An adhesive or an adhesive member (not shown) for attaching and fixing the wireless communication coil 2500 to the upper surface of the shielding material 2300 may be formed in a region where the wireless communication coil 2500 and the shielding material 2300 contact each other.
  • the wireless communication coil 500 and the shielding material 2300 may be formed in a part of an area in contact with each other.
  • an adhesive or adhesive may be applied to a portion of the region in which the wireless communication coil 2500 is wound and bent or a portion of the region in which the wireless communication coil 2500 is horizontally wound among the areas where the wireless communication coil 2500 and the shielding material 2300 contact each other. It can be made to form a member.
  • the configuration is not limited, and various adhesives or adhesive members may be formed in areas or locations for elaborate fixing of the wireless communication coil 2500 and the shielding material 2300.
  • the wireless communication coil 2500 has threshold thicknesses T1_1, T1_2, T1_3.
  • the thickness T1_1 of the wireless communication coil 500 may be 0.5 mm.
  • a wireless communication coil spaced apart from the wireless charging coil module 2600 on the upper surface of the shielding material 2300 and wound to surround the wireless charging coil module 2600 will be described. . Therefore, according to the present embodiment, the width T1 of the wireless communication coil wound in a spiral shape on the plane of the shielding material 2300 may be 1.5 mm.
  • the wireless communication coil 2500 may be spaced apart from the wireless charging coil module 600 by a threshold distance. That is, the wireless communication coil 2500 may be spaced apart from the wireless charging coil module by a distance T3 as shown in FIG. 11.
  • the separation distance T3 may be disposed two times or more than a thickness of the wireless communication coil 2500 to prevent the leakage current. Therefore, the separation distance between the wireless charging coil module 2600 and the wireless communication coil 2500 may be preferably 1 mm or more. More preferably, the separation distance T3 of the wireless charging coil module 600 and the wireless communication coil 2500 may be 1.5 mm or more.
  • the wireless communication coil 2500 may be disposed to have a distance T4 from the shielding wall 2302 of the shielding material 2600.
  • the separation distance T4 may be disposed two or more times or more than a thickness of the wireless communication coil 2500. Therefore, the wireless communication coil 2500 may be spaced at least 1 mm from the inside of the shielding wall 2302 of the shielding material 2300. More preferably, the distance T4 between the wireless communication coil 2500 and the shielding wall 2302 may be 1.5 m or more.
  • One side and the other side of the wireless communication coil 2500 may be connected to the connection pin (P), respectively.
  • one side of the wireless communication coil 2500 may be soldered and connected between the twenty-first and twenty-second connecting pins P21 and P22, and the other side may be soldered and connected between the twenty-third and twenty-fourth connecting pins P23 and P24. have.
  • the wireless charging coil module 2600 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto, and may be wound at different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include first wireless charging coil 2610 to third wireless charging coil 2630. The second wireless charging coil 2620 and the third wireless charging coil 2630 may be disposed on the first layer disposed on the same layer. The first wireless charging coil 2610 may be disposed on the second layer and disposed on the second wireless charging coil 2620 and the third wireless charging coil 2630. Accordingly, the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power. In addition, the distance between the wireless communication coil 2500 and the wireless charging coil module 2600 may be based on the second wireless charging coil 2620 and the third wireless charging coil 2630 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wire or cable coated with a sheath.
  • the first wireless charging coil 610 may include a first-first charging coil connection 2611 and a second-second charging coil connection 2612.
  • the first-first charging coil connection unit 2611 may extend to a coil wire disposed outside the first wireless charging coil 2610.
  • the 1-2 charging coil connection part 2612 may extend from a coil line disposed inside the first wireless charging coil 2610.
  • the second wireless charging coil 2620 may include a 2-1 charging coil connector 2621 and a 2-2 charging coil connector 2622.
  • the 2-1 charging coil connection unit 621 may extend from a coil line disposed outside the second wireless charging coil 2620.
  • the 2-2 charging coil connecting unit 2622 may extend from a coil line disposed inside the second wireless charging coil 2620.
  • the third wireless charging coil 2630 may include a 3-1 charging coil connection 2263 and a 3-2 charging coil connection 632.
  • the 3-1 charging coil connection 2263 may extend from a coil line disposed outside the third wireless charging coil 2630.
  • the third-2 charging coil connection unit 2632 may extend from a coil line disposed inside the third wireless charging coil 630.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • each connection portion of the wireless charging coil may be disposed to extend in the direction of the cable access part 2320 disposed on one side of the shielding material 2300.
  • the 3221 charging coil connector 2263 and the 3-2 charging coil connector 2632 of the 2621 and the 2-2 charging coil connector 2622 and the third wireless charging coil 2630 are shielding materials 2300.
  • a part of the first to third charging coil connection parts 2611 to 2632 is disposed in the recess formed by the cable access part 2320 to solder the connection pins P1 to P24. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface of the substrate 2400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as shown in FIG. 37, when there are a plurality of wireless charging coils, the second wireless charging coil 2620, the first wireless charging coil 2610, and the third wireless charging coil 2630 may be arranged in this order.
  • the second-second charging coil connection part 2622 of the second wireless charging coil 2620 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 2621 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection part 2612 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 2611 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the 3-2 charging coil connection part 2632 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 th charging coil connection part 2263 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection parts 2611, 2612, 2621, 2622, 2631, and 2632 connected to each connection pin P are spaced apart from the substrate 2400 by a predetermined distance (T7_1, T7_2, T7_3, T7_4, T7_5, and T7_6).
  • each charging coil connection part 2611, 2612, 2621, 2622, 2631, and 2632 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pin.
  • the soldering jig is used to solder the charging coil connection part and the connecting pin, and the soldering jig is removed. , T7_5, T7_6) to support the soldering.
  • the wireless charging device constitutes a single shielding material including a shielding wall.
  • a single shielding material including a shielding wall.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • FIG. 43 is an exploded perspective view of the wireless charging device according to another embodiment
  • FIG. 44 is a perspective view of the wireless charging device shown in FIG. 43
  • FIG. 45 is a view of A-A 'of the wireless charging device shown in FIG. 44
  • 46 is a side view
  • FIG. 46 is a side view illustrating B-B 'of the wireless charging device shown in FIG. 44.
  • a wireless charging device may include a shielding material 3300, a substrate 3400, a wireless communication coil 3500, and a wireless charging coil module 3600.
  • the substrate 3400 supports the shielding material 3300, the wireless communication coil 3500, and the wireless charging coil module 3600.
  • the substrate 3400 may be disposed on one lower surface of the shielding material 3300. That is, the area of the substrate 3400 may be smaller than the area of the shielding material 3300.
  • An adhesive or an adhesive member (not shown) may be formed on the lower surfaces of the substrate 3400 and the shielding material 3300 to attach and fix the substrate 3400 and the shielding material 3300.
  • the substrate 1400 may include a plurality of pin holes (Ph). Connection pins P1 to P24 are inserted into each pin hole Ph so as to extend from the top surface to the bottom surface of the substrate 3400. Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • the lower surface of the substrate 3400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • the connection pin supporter PS allows the plurality of connection pins to be firmly fixed to the substrate 3400 and protects the plurality of connection pins P1 to P24.
  • the connection pin supporter PS may be disposed on the bottom surface of the substrate 3400 corresponding to the plurality of connection pins P1 to P24. In addition, the area of the connection pin supporter PS may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 3400 may include one or more temperature sensors 3700, 3710, 3720, and 3730.
  • One or more temperature sensors 3700 may be disposed on an upper surface of the substrate 3400.
  • the plurality of temperature sensors 3700 may include first to third temperature sensors 3710, 3720, and 3730.
  • the first to third temperature sensors 1710, 1720, and 1730 may be connected to and correspond to the wireless charging coils 3610, 3620, and 3630 of the wireless charging coil module 3600.
  • the first temperature sensor 3710 may be disposed on an upper surface of the substrate 1400 to measure the temperature of one side of the first wireless charging coil 3610.
  • the second temperature sensor 3720 may be disposed on an upper surface of the substrate 1400 to measure the temperature of one side of the second wireless charging coil 3620.
  • the third temperature sensor 3730 may be disposed on an upper surface of the substrate 3400 to measure the temperature of one side of the third wireless charging coil 1630.
  • the first to third temperature sensors 3710, 3720, and 3730 may be disposed to correspond to the through-holes 310 (3311, 3312, 3313) of the shielding material 3300.
  • the first temperature sensor 3710 may be disposed on an upper surface of the substrate 3400 to correspond to the first through hole 3311 of the shielding material 3300.
  • the second temperature sensor 3720 may be disposed on an upper surface of the substrate 3400 to correspond to the second through hole 3312 of the shielding material 1300.
  • the third temperature sensor 3730 may be disposed on the upper surface of the substrate 3400 to correspond to the third through hole 3313 of the shielding material 3300.
  • one or more temperature sensors 3700, 3710, 3720, and 3730 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 3700.
  • the one or more temperature sensors 3700, 3710, 3720, and 3730 may be disposed under a separate substrate (not shown), and thus, may measure the temperature adjacent to the wireless charging coil module 3600.
  • each of the temperature sensors 3710, 3720, and 3730 may be connected to a connection pin P formed on the substrate 3400.
  • the connection part (not shown) extending from the first temperature sensor 3710 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 3720 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 3730 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 3710, 3720, and 3730 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the shield 3300 may be disposed on the substrate 3400.
  • the shielding material 3300 may support the wireless communication coil 3500 and the wireless charging coil module 3600 and perform a function for improving the performance of the wireless communication coil 3500 and the wireless charging coil module 1600.
  • the shielding material 3300 may guide the wireless power generated in the wireless charging coil module 3600 in the charging direction, and may protect various circuits disposed below from the electromagnetic field.
  • the area of the shield 3300 may be larger than the area of the wireless communication coil 3500 disposed thereon.
  • the shield 3300 may be formed with a cable entry part 3320 having a recess structure.
  • the cable access part 3320 of the shielding material 3300 may secure a space of the charging coil connection part when connecting the connection pin P of the wireless charging coil connection part of the wireless charging coil to the substrate 3400.
  • the cable entry part 3320 is not an essential component, and the cable entry part 3320 may not be formed in the shielding material 3300.
  • the shield 3300 may include through-holes 3310: 3311. 3312. 3313 having a size, a shape, and a position corresponding to the temperature sensor 3700 disposed on the substrate 3400.
  • the shielding material 3300 may have a permeability within a range suitable for the wireless communication coil but not affecting the wireless charging. Specifically, a high permeability shielding material should be used in the case of a wireless charging coil, and a high permeability shielding material should be used in the case of a wireless communication coil and a low permeability shielding material should be used. However, in the present embodiment, as the wireless communication coil and the wireless charging coil are implemented on a single shield, a compromise value for each of the above different permeability is required. As an example, the permeability of the shielding material according to the present embodiment may have a range of 800 ⁇ W 10%. That is, the shielding material 3300 supporting the wireless communication coil and the wireless charging coil according to the present embodiment may be configured to have a magnetic permeability of 720 ⁇ to 880 ⁇ .
  • the wireless communication coil 3500 may be disposed to be wound a plurality of times so as to surround the side surface of the shielding material 3300 in a helical form.
  • the helical form refers to the coils being wound while overlapping in the height (vertical) direction. That is, it refers to a wireless communication coil wound by vertically stacked.
  • the wireless communication coil 3500 is a cotton yarn, a Litz wire. It may be formed of an enameled copper wire or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • the shielding material 3700 is formed on the side, a separate PCB substrate is not required, so that the overall thickness of the wireless charger can be reduced.
  • the recognition rate can be improved because the resistance is lower than that of the coil pattern, and the cost can be reduced, thereby reducing the material cost.
  • the wireless communication coil 3500 is attached and fixed to the side of the shielding material 3300 by an adhesive or an adhesive member (not shown).
  • An adhesive or adhesive member (not shown) for winding and attaching and fixing the wireless communication coil 3500 to the side of the shielding material 3300 may be formed in an area where the wireless communication coil 3500 and the shielding material 3300 are in contact with each other. have.
  • an adhesive or an adhesive member may be applied to a portion of the region where the wireless communication coil 3500 is wound and bent or a portion of the region where the wireless communication coil 3500 is horizontally wound among the areas where the wireless communication coil 3500 and the shielding material 3300 are in contact with each other. Can be formed.
  • the configuration is not limited, and various adhesives or adhesive members may be formed in areas or locations for elaborate fixing of the wireless communication coil 3500 and the shielding material 3300.
  • the wireless communication coil 3500 has threshold thicknesses T11_1, T11_2, and T12_3.
  • the thickness T11_1 of the wireless communication coil 3500 may be 0.5 mm.
  • the thickness T11_1 of the wireless communication coil 3500 is 0.5 mm and the side surfaces of the shielding material 1300 are vertically laminated and wrapped so that the wireless communication coil having a thickness of 0.5 mm is wound three times.
  • the wireless communication coil 3500 may be wound at a position spaced apart from the upper portion of the shielding material 3300 by 0.5 mm (T12_1) and 0.5 mm (T12_1) from the bottom.
  • the first turned wireless communication coil 3510 is formed at a position spaced 0.5 mm (T12_1) or more from the upper portion of the shielding material 3300, and the wireless communication coil 3530 having a third turn is sequentially wound downward.
  • the shield member 3300 may be formed at a position spaced apart from the lower portion of the shield member 3300 by 0.5 mm ( ⁇ 12_2_ or more). Therefore, the height T12 of the shield member 3300 may be formed to have at least 2.5 mm or more.
  • One side and the other side of the wireless communication coil 3500 may be connected to the connection pin (P), respectively. Specifically, one side of the wireless communication coil 3500 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14, and the other side may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16. Can be.
  • the wireless charging coil module 3600 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto and may be wound around different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto, and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include the first wireless charging coil 3610 to the third wireless charging coil 3630.
  • the second wireless charging coil 3620 and the third wireless charging coil 3630 may be disposed on a first layer disposed on the same layer.
  • the first wireless charging coil 3610 may be disposed on the second layer and disposed on the second wireless charging coil 3620 and the third wireless charging coil 3630.
  • the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power.
  • the distance between the wireless communication coil 3500 and the wireless charging coil module 3600 may be based on the second wireless charging coil 3620 and the third wireless charging coil 1630 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wire or cable coated with a sheath.
  • the first wireless charging coil 3610 may include a 1-1 charging coil connection part 3611 and a 1-2 charging coil connection part 3612.
  • the first-first charging coil connection part 3611 may extend to a coil wire disposed outside the first wireless charging coil 3610.
  • the 1-2 charging coil connection part 3612 may extend from a coil line disposed inside the first wireless charging coil 3610.
  • the second wireless charging coil 3620 may include a 2-1 charging coil connector 3621 and a 2-2 charging coil connector 3622.
  • the 2-1 charging coil connection unit 1621 may extend from a coil line disposed outside the second wireless charging coil 3620.
  • the 2-2 charging coil connection unit 1622 may extend from a coil wire disposed inside the second wireless charging coil 3620.
  • the third wireless charging coil 3630 may include a 3-1 charging coil connection part 3611 and a 3-2 charging coil connection part 3632.
  • the 3-1 charging coil connection part 3613 may extend from a coil wire disposed outside the third wireless charging coil 3630.
  • the third-2 charging coil connection part 3632 may extend from a coil wire disposed inside the third wireless charging coil 3630.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • each connection portion of the wireless charging coil may be disposed to extend in the direction of the cable access part 3320 disposed on one side of the shielding material 3300.
  • the first-first charging coil connection part 3611 and the first-second charging coil connection part 3612 of the first wireless charging coil 3610 and the second-first charging coil connection part of the second wireless charging coil 3620 are provided.
  • the 3-1 2nd charging coil connection part 3632 and the 3-1 charging coil connection part 3331 and the 3-2 charging coil connection part 3632 of the third wireless charging coil 3316 may be shielded material 3300.
  • a part of the first to third charging coil connection parts 3611 to 3632 is disposed in a recess formed by the cable access part 3320 to be soldered with the connecting pins P1 to P24. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface of the substrate 3400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as illustrated in FIG. 46, when there are a plurality of wireless charging coils, the wireless charging coils 3620, the first wireless charging coils 3610, and the third wireless charging coils 3630 may be arranged in this order.
  • the second-second charging coil connection part 3622 of the second wireless charging coil 1620 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 3621 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection unit 1612 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 3611 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the 3-2 charging coil connection part 3632 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 charging coil connection part 3613 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection parts 3611, 3612, 3621, 3622, 3631, and 3632 connected to the connection pins P are spaced apart from the substrate 1400 by a predetermined distance (T13_1, T13_2, T13_3, T13_4, T13_5, and T13_6).
  • each charging coil connection part 3611, 3612, 3621, 3622, 3631, and 3632 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pin. .
  • the soldering jig is used to solder the charging coil connection part and the connecting pin, and the soldering jig is removed.
  • the charging coil connection part is spaced from the substrate 3400 at a predetermined interval (T13_1, T13_2, T13_3, T13_4) for ease of process and soldering reliability. , T13_5, T13_6) to support the soldering.
  • the wireless charging device constitutes a single shielding material.
  • the wireless charging coil module and the wireless communication coil in a helical manner on a single shielding material, directivity, resistance reduction, recognition rate improvement, and manufacturing cost can be reduced.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • FIG. 47 is an exploded perspective view of a wireless charging device according to another embodiment
  • FIG. 48 is a perspective view of the wireless charging device shown in FIG. 47
  • FIG. 49 shows A-A ′ of the wireless charging device shown in FIG. 48
  • 50 is a cross-sectional view taken along line B-B 'of the wireless charging device shown in FIG. 48
  • FIG. 51 is a side view showing C-C' of the wireless charging device shown in FIG.
  • a wireless charging device may include a shielding material 3300, a substrate 3400, a wireless communication coil 3500, and a wireless charging coil module 3600.
  • the substrate 3400 supports the shielding material 3300, the wireless communication coil 3500, and the wireless charging coil module 3600.
  • the substrate 3400 may be disposed on one lower surface of the shield 3300. That is, the substrate 3400 may be formed smaller than the size of the shielding material 3300.
  • An adhesive or an adhesive member (not shown) may be formed on the lower surfaces of the substrate 3400 and the shielding material 3300 to attach and fix the substrate 3400 and the shielding material 3300.
  • the substrate 3400 may include a plurality of pin holes (Ph). Connection pins P1 to P24 are inserted into each pin hole Ph so as to extend from the top surface to the bottom surface of the substrate 3400. Wireless charging coil modules may be electrically connected by the connection pins P1 to P24.
  • the lower surface of the substrate 3400 may include a connection pin supporter (PS) for fixing the connection pins P1 to P24.
  • the connection pin supporter PS may allow the plurality of connection pins to be firmly fixed to the substrate 400, and protect the plurality of connection pins P1 to P24.
  • the connection pin supporter PS may be disposed on the bottom surface of the substrate 3400 corresponding to the plurality of connection pins P1 to P24. In addition, the area of the connection pin supporter PS may be larger than the area in which the plurality of connection pins are disposed.
  • the substrate 3400 may include one or more temperature sensors 3700, 3710, 3720, and 3730.
  • One or more temperature sensors 3700 may be disposed on an upper surface of the substrate 3400.
  • the plurality of temperature sensors 3700 may include first to third temperature sensors 3710, 3720, and 3730.
  • the first to third temperature sensors 3710, 3720. 3730 may be connected to and correspond to the wireless charging coils 3610, 3620, 3630 of the wireless charging coil module 3600.
  • the first temperature sensor 1710 may be disposed on an upper surface of the substrate 3400 to measure the temperature of one side of the first wireless charging coil 3610.
  • the second temperature sensor 3720 may be disposed on an upper surface of the substrate 3400 to measure the temperature of one side of the second wireless charging coil 1620.
  • the third temperature sensor 3730 may be disposed on an upper surface of the substrate 3400 to measure the temperature of one side of the third wireless charging coil 1630.
  • the first to third temperature sensors 3710, 3720, and 3730 may be disposed to correspond to the through holes 3310, 3311, 3312, and 3313 of the shielding material 3300.
  • the first temperature sensor 3710 may be disposed on an upper surface of the substrate 3400 to correspond to the first through hole 3311 of the shielding material 3300.
  • the second temperature sensor 3720 may be disposed on the upper surface of the substrate 3400 to correspond to the second through hole 3312 of the shielding material 3300.
  • the third temperature sensor 3730 may be disposed on the upper surface of the substrate 3400 to correspond to the third through hole 3313 of the shielding material 3300.
  • one or more temperature sensors 3700, 3710, 3720, and 3730 may be disposed on a separate substrate (not shown) disposed on the wireless charging coil module 3700.
  • the one or more temperature sensors 3700, 3710, 3720, and 3730 may be disposed under a separate substrate (not shown), and thus, may measure the temperature adjacent to the wireless charging coil module 3600.
  • each of the temperature sensors 3710, 3720, and 3730 may be connected to a connection pin P formed on the substrate 3400.
  • the connection part (not shown) extending from the first temperature sensor 3710 may be soldered and connected between the first and second connection pins P1 and P2.
  • the connection part (not shown) extending from the second temperature sensor 3720 may be soldered and connected between the third and fourth connection pins P3 and P4.
  • the connection part (not shown) extending from the third temperature sensor 3730 may be soldered and connected between the fifth and sixth connection pins P5 and P6.
  • a connection part (not shown) extending from a ground (not shown) commonly connected to each of the temperature sensors 3710, 3720, and 3730 may be soldered and connected between the seventh and eighth connection pins P7 and P8.
  • the shield 3300 may be disposed on the substrate 3400.
  • the shielding material 3300 may support the wireless communication coil 3500 and the wireless charging coil module 3600 and perform a function for improving performance of the wireless communication coil 3500 and the wireless charging coil module 3600.
  • the shielding material 3300 may guide the wireless power generated in the wireless charging coil module 3600 in the charging direction, and may protect various circuits disposed below from the electromagnetic field.
  • the area of the shielding material 3300 may be larger than the area of the wireless communication coil 3500 disposed thereon.
  • the shield 3300 may be formed with a cable entry part 3320 having a recess structure.
  • the cable access part 3320 of the shielding material 3300 may secure a space of the charging coil connection part when connecting the connection pin P of the wireless charging coil connection part of the wireless charging coil to the substrate 3400.
  • the cable entry part 3320 is not an essential component, and the cable entry part 3320 may not be formed in the shielding material 3300.
  • the shield 3300 may include through-holes 3310: 3311, 3312, and 3313 having sizes, shapes, and positions corresponding to those of the temperature sensor 3700 disposed on the substrate 3400.
  • the wireless charging coil module 3600 may be disposed on the shielding material 3300, and the wireless communication coil 3500 may be wound while being spaced apart from the wireless charging coil module 3600 by a critical distance. Therefore, the size of the shielding material 3300 may be formed to such a size that all four directions may protrude to twice or more than the thickness of the wireless communication coil 3500 that is vertically wound on the shielding material 3300. .
  • the shielding material 3300 may include a bottom portion 3301 and a shielding wall 3302.
  • the shielding material 3300 may include a bottom portion 3301 to be bonded to the wireless communication coil 3500 and the wireless charging coil module 3600 and a shielding wall 3302 formed to surround the outer region of the shielding material 3300.
  • the bottom portion 3301 and the shielding wall 3302 of the shielding material 3300 may be integrally formed.
  • the bottom portion 3301 and the shielding wall 3302 may be formed in a separate configuration.
  • the shielding wall 3302 may be bonded and fixed by the bottom portion 3301 and an adhesive or an adhesive member (not shown).
  • the shield wall 2302 may include an open area 3320 on one side.
  • the open area 3320 may be formed in a direction and a space in which each coil connection portion of the wireless charging coil may be drawn out.
  • the open area is not an essential configuration and the open wall is not formed, and the shielding wall 1302 may be formed in a closed loop shape.
  • the bottom part 3301 of the shielding material 3300 may form a connection part through hole (not shown).
  • the connection part through hole may be formed to correspond to the wireless charging coil connection part to penetrate the coil connection part of the wireless charging coil and the coil connection part of the wireless communication coil.
  • the shielding wall 2302 may be formed up to a height T11 of the wireless communication coil 3500.
  • the height T14 of the shield wall 3302 may be formed up to the height T11 of the wireless communication coil 3500 which is disposed by being stacked vertically on the bottom portion 1301 of the shielding material 3300. Can be.
  • the height of the wireless communication coil 3500 may be greater than or equal to T11.
  • the shielding material 3300 may have a permeability within a range suitable for the wireless communication coil but not affecting the wireless charging. Specifically, a high permeability shielding material should be used in the case of a wireless charging coil, and a high permeability shielding material should be used in the case of a wireless communication coil and a low permeability shielding material should be used. However, in the present embodiment, as the wireless communication coil and the wireless charging coil are implemented on a single shield, a compromise value for each of the above different permeability is required. As an example, the permeability of the shielding material according to the present embodiment may have a range of 800 ⁇ W 10%. That is, the shielding material 3300 supporting the wireless communication coil and the wireless charging coil according to the present embodiment may be configured to have a magnetic permeability of 720 ⁇ to 880 ⁇ .
  • the shielding wall 1302 has been described as an example surrounding the outer region of the shielding material 3300.
  • a second shielding wall (not shown) may be added and configured.
  • an additional shielding wall (not shown) may be configured between the wireless communication coil 3500 and the wireless charging coil module 3600 to reduce interference between the wireless charging coil and the wireless communication coil.
  • the wireless communication coil 3500 may be disposed to be wound a plurality of times so as to be stacked vertically from the bottom portion 1301 of the shielding material 3300 in a helical form.
  • the helical form refers to the coils being wound while overlapping in the height (vertical) direction. That is, it refers to a wireless communication coil wound by vertically stacked.
  • the wireless communication coil 3500 is a cotton yarn, a Litz wire. It may be formed of an enameled copper wire or the like.
  • the wireless communication coil according to the embodiment has excellent features of fairness and reliability compared to the wireless communication coil pattern formed by printing on the PCB substrate.
  • the shielding material is formed on the side of the 2700, a separate PCB substrate is not required, so that the overall thickness of the wireless charger can be reduced.
  • the recognition rate can be improved because the resistance is lower than that of the coil pattern, and the cost can be reduced, thereby reducing the material cost.
  • the wireless communication coil 3500 is spaced apart from the wireless charging coil module 3600 by a critical distance T15_1 at the bottom 3301 of the shielding material 3300, and is spaced apart from the shield wall 3302 by a critical distance T15_2. It can be attached and fixed by an adhesive member (not shown).
  • the adhesive or adhesive member (not shown) for attaching and fixing the wireless communication coil 3500 to the bottom surface 3301 of the shielding material 3300 is the bottom portion 1301 of the wireless communication coil 3500 and the shielding material 3300. All may be formed in the region in which. Alternatively, the wireless communication coil 3500 and the bottom portion 3301 of the shielding material 3300 may be formed in a portion of the contact area.
  • an adhesive or an adhesive member may be formed on a portion of the region where the wireless communication coil 3500 is bent or a portion of the region where the wireless communication coil 3500 is horizontally wound among the areas where the wireless communication coil 3500 and the shielding material 3300 contact each other. You can do that.
  • the configuration is not limited, and the adhesive or the adhesive member may be formed in various areas or locations for precise fixing of the wireless communication coil 500 and the shield 3300.
  • the wireless communication coil 3500 is spaced apart from the wireless charging coil module 3600 by a threshold distance (T15_1), and separated from the shielding wall (3302) by a critical distance (T15_2) as the independent wireless communication coil 3500 A configuration that can be fixed and supported is required.
  • an adhesive or an adhesive member may be added to a portion of the wireless communication coil 3500 that is vertically stacked and wound.
  • an adhesive or an adhesive member may be formed on each bent portion in which the wireless communication coil 3500 is bent or a part of an area wound vertically to fix and support the wireless communication coil 3500.
  • the critical distances T15_1 and T15_2 at which the wireless communication coil 3500 is spaced apart from the wireless charging coil module 3600 and the shielding wall 1302 respectively are twice the thicknesses T11_1, T11_2, and T11_3 of the wireless communication coil 3500. It may be arranged more or more spaced apart. Preferably, the separation distances T15_1 and T15_2 may be spaced apart by 1 mm or more. More preferably, the distances T15_1 and T15_2 spaced apart from the wireless communication coil 3500 and the shielding wall 3302 or the wireless charging coil module 3600 may be 1.5 mm or more.
  • the wireless communication coil 3500 has threshold thicknesses T11_1, T11_2, and T12_3.
  • the thickness T11_1 of the wireless communication coil 3500 may be 0.5 mm.
  • the thickness T11_1 of the wireless communication coil 3500 may be formed by vertically stacking the wireless communication coil having a thickness of 0.5 mm and winding three times.
  • One side and the other side of the wireless communication coil 3500 may be connected to the connection pin (P), respectively. Specifically, one side of the wireless communication coil 3500 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14, and the other side may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16. Can be.
  • the wireless charging coil module 3600 may include one or more wireless charging coils. When there are a plurality of wireless charging coils, each wireless charging coil may be wound in the same number of turns. The present invention is not limited thereto and may be wound around different turns. In addition, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto, and may have different inductances.
  • the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include the first wireless charging coil 3610 to the third wireless charging coil 3630.
  • the second wireless charging coil 3620 and the third wireless charging coil 3630 may be disposed on a first layer disposed on the same layer.
  • the first wireless charging coil 3610 may be disposed on the second layer and disposed on the second wireless charging coil 3620 and the third wireless charging coil 3630.
  • the charging region may be extended to arrange the plurality of wireless charging coils in different layers to efficiently transmit wireless power.
  • the distance between the wireless communication coil 3500 and the wireless charging coil module 3600 may be based on the second wireless charging coil 3620 and the third wireless charging coil 3630 disposed on the first floor.
  • the one or more wireless charging coils may also include first and second connections through which an AC signal is input or output.
  • the first and second connections may be wire or cable coated with a sheath.
  • the first wireless charging coil 3610 may include a 1-1 charging coil connection part 3611 and a 1-2 charging coil connection part 3612.
  • the first-first charging coil connection part 3611 may extend to a coil wire disposed outside the first wireless charging coil 3610.
  • the 1-2 charging coil connection part 3612 may extend from a coil line disposed inside the first wireless charging coil 3610.
  • the second wireless charging coil 3620 may include a 2-1 charging coil connector 3621 and a 2-2 charging coil connector 3622.
  • the 2-1 charging coil connection part 3621 may extend from a coil line disposed outside the second wireless charging coil 3620.
  • the 2-2 charging coil connection part 3622 may extend from a coil line disposed inside the second wireless charging coil 3620.
  • the third wireless charging coil 1630 may include a 3-1 charging coil connection part 3611 and a 3-2 charging coil connection part 3632.
  • the 3-1 charging coil connection part 3613 may extend from a coil line disposed outside the third wireless charging coil 13630.
  • the third-2 charging coil connection part 3632 may extend from a coil wire disposed inside the third wireless charging coil 3630.
  • each of the first and second connection lines of the wireless charging coil may be disposed extending from each wireless charging coil in the same direction of one side of the wireless charging device.
  • each connection portion of the wireless charging coil may be disposed to extend in the direction of the cable access part 3320 disposed on one side of the shielding material 3300.
  • 3321 and 3-2 charging coil connection portion 3622 and 3-2 charging coil connection portion 3632 and 3-2 charging coil connection portion 3632 of third wireless charging coil 3630 are shielded material 3300.
  • a part of the first to third charging coil connection parts 3611 to 3632 is disposed in a recess formed by the cable access part 3320 to be soldered with the connecting pins P1 to P24. Space can be secured, and defect reduction and fairness can be improved.
  • each of the first and second connection lines of the wireless charging coil may be electrically connected through a connection pin P formed on the upper surface of the substrate 3400. More specifically, the first and second connection lines of each of the wireless charging coils may be soldered and connected to each of the plurality of connection pins P. In addition, the first and second connection lines may be connected to the plurality of connection pins in the order in which one or more wireless charging coils are arranged. For example, as illustrated in FIG. 46, when there are a plurality of wireless charging coils, the wireless charging coils 3620, the first wireless charging coils 3610, and the third wireless charging coils 3630 may be arranged in this order.
  • the second-second charging coil connection part 3622 of the second wireless charging coil 3620 may be soldered and connected between the ninth and tenth connection pins P9 and P10.
  • the 2-1 charging coil connection part 3621 may be soldered and connected between the eleventh and twelfth connection pins P11 and P12.
  • the 1-2 charging coil connection part 3612 may be soldered and connected between the thirteenth and fourteenth connection pins P13 and P14.
  • the first-first charging coil connection part 3611 may be soldered and connected between the fifteenth and sixteenth connection pins P15 and P16.
  • the 3-2 charging coil connection unit 1632 may be soldered and connected between the seventeenth and eighteenth connection pins P17 and P18.
  • the 3-1 charging coil connection part 3613 may be soldered and connected between the 19th and 20th connection pins P19 and P20.
  • the charging coil connection parts 3611, 3612, 3621, 3622, 3631, and 3632 connected to the connection pins P are spaced apart from the substrate 3400 by a predetermined distance (T16_1, T16_2, T16_3, T16_4, T16_5, and T16_6.
  • each charging coil connection part 3611, 3612, 3621, 3622, 3631, and 3632 is soldered to each of the connection pins P to perform a soldering process for electrically connecting the charging coil connection part and the connection pin. .
  • the soldering jig is used to solder the charging coil connection part and the connection pin, and the soldering jig is removed.
  • the charging coil connection part is spaced from the substrate 3400 at a predetermined interval (T16_1, T16_2, T16_3, T16_4). , T16_5, T16_6) to support the soldering.
  • the wireless charging device constitutes a single shielding material including a shielding wall.
  • the wireless charging coil module and the wireless communication coil in a helical manner on a single shielding material, directivity, resistance reduction, recognition rate improvement, and manufacturing cost can be reduced.
  • the wireless communication coil according to the embodiment has an effect of increasing the recognition rate because the resistance is low compared to the wireless communication coil pattern formed by being printed on the PCB substrate.
  • the wireless communication coil according to the embodiment has a low price compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the recognition rate.
  • the wireless communication coil according to the embodiment does not need a separate PCB substrate compared to the wireless communication coil pattern formed by printing on the PCB substrate has the effect of reducing the thickness of the entire wireless charger.
  • Table 3 below shows the electrical characteristics of the improved wireless charging device according to the embodiments.
  • the inductance increases and the resistance decreases according to the structural characteristics of the wireless communication coil and the structural characteristics of the shielding material according to the present embodiment. Also. As the vertical recognition distance is improved, the electrical performance may be improved as compared with a wireless communication coil configured in a printed pattern form on a conventional substrate.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention concerne un dispositif de charge sans fil pourvu d'une bobine de communication sans fil. Le dispositif de charge sans fil selon ce mode de réalisation comprend : une feuille de dissipation de chaleur ; un matériau de blindage disposé sur la feuille de dissipation de chaleur ; un module de bobine de charge sans fil disposé sur le matériau de blindage ; et une bobine de communication sans fil enroulée et stratifiée verticalement autour des surfaces latérales du matériau de blindage de manière à entourer le matériau de blindage.
PCT/KR2019/003050 2018-03-28 2019-03-15 Dispositif de charge sans fil pourvu d'une bobine de communication sans fil WO2019190091A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR10-2018-0035905 2018-03-28
KR1020180035905A KR20190113347A (ko) 2018-03-28 2018-03-28 무선 통신 코일을 구비한 무선충전장치
KR10-2018-0036242 2018-03-29
KR1020180036242A KR20190114090A (ko) 2018-03-29 2018-03-29 무선 통신 코일을 구비한 무선충전장치
KR10-2018-0041467 2018-04-10
KR1020180041467A KR20190118297A (ko) 2018-04-10 2018-04-10 무선 통신 코일을 구비한 무선충전장치

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WO2019190091A1 true WO2019190091A1 (fr) 2019-10-03

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PCT/KR2019/003050 WO2019190091A1 (fr) 2018-03-28 2019-03-15 Dispositif de charge sans fil pourvu d'une bobine de communication sans fil

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WO (1) WO2019190091A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11271435B2 (en) * 2017-06-16 2022-03-08 Amosense Co., Ltd Wireless power transmission device for vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101209979B1 (ko) * 2011-10-24 2012-12-07 엘지이노텍 주식회사 차폐장치 및 무선전력 송신장치
KR101524493B1 (ko) * 2013-08-01 2015-06-01 주식회사 파워로직스 무선통합모듈을 갖는 이동통신장치용 배터리
KR20150089239A (ko) * 2014-01-27 2015-08-05 엘지이노텍 주식회사 무선 전력 수신 장치
KR20180015899A (ko) * 2016-08-04 2018-02-14 삼성전자주식회사 차폐 구조를 포함하는 전자 장치
WO2018032009A1 (fr) * 2016-08-12 2018-02-15 Energous Corporation Conceptions miniaturisées extrêmement efficaces pour système de transfert d'énergie en champ proche

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101209979B1 (ko) * 2011-10-24 2012-12-07 엘지이노텍 주식회사 차폐장치 및 무선전력 송신장치
KR101524493B1 (ko) * 2013-08-01 2015-06-01 주식회사 파워로직스 무선통합모듈을 갖는 이동통신장치용 배터리
KR20150089239A (ko) * 2014-01-27 2015-08-05 엘지이노텍 주식회사 무선 전력 수신 장치
KR20180015899A (ko) * 2016-08-04 2018-02-14 삼성전자주식회사 차폐 구조를 포함하는 전자 장치
WO2018032009A1 (fr) * 2016-08-12 2018-02-15 Energous Corporation Conceptions miniaturisées extrêmement efficaces pour système de transfert d'énergie en champ proche

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11271435B2 (en) * 2017-06-16 2022-03-08 Amosense Co., Ltd Wireless power transmission device for vehicle

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